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19

Number 19 (nineteen) is an odd two-digits prime number and natural number following 18 and preceding 20.

Properties of the number 19

Nominal19
Cardinalnineteen
Ordinal19th
Number of digits2
Sum of digits10
Product of digits9
Number parityOdd
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Prime Factorization of 19

Prime factorization19
Prime factors19
Number of distinct prime factors ω(n)1
Total number of prime factors Ω(n)1
Sum of prime factors19
Product of prime factors19
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Divisors of 19

List of proper divisors 1
List of all dividers1, 19
Number of divisors d(n)2
Sum of all divisors σ(n)20
Aliquot sum 1
19 is a deficient number , since it is larger than the sum of its proper divisors (1). Its deficiency is 18.
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Prime numbers

Is 19 a prime number?Yes
Is 19 a semiprime number?No
Is 19 a Chen prime number?Yes
Is 19 a Mersenne prime number?Yes: M6
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Sequences

Is 19 a Catalan number?No
Is 19 a Fibonacci number?No
Is 19 a Idoneal number?No
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Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
19 is a Happy number
19 is not a Humble number
19 is not a Münchhausen number
19 is not a Perfect number
19 is not a Perfect square
19 is not a Palindrome
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Numeric Bases of 19

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.
BaseSystemValue
2Binary100112
3Ternary2013
4Quaternary1034
5Quinary345
6Senary316
7Septenary257
8Octal238
9Nonary219
10Decimal19
12Duodecimal1712
16Hexadecimal1316
20Vigesimalj20
36Base36j36
60SexagesimalJ60
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Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 19 (n2)361
Cube of 19 (n3)6859
Square root of 194.3588989435407
Natural Logarithm (ln) of 192.9444389791664
Decimal Logarithm (log) of 191.2787536009528
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Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 190.14987720966295
Cosecant of 196.6721284860375
Cosine of 190.98870461818667
Secant of 191.0114244250563
Tangent of 190.1515894706124
Cotangent of 196.5967642472801
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Number parity

Parity is the property of an integer of whether it is even or odd.

Is 19 an Even Number?

No

Is 19 an Odd Number?

Yes, the number 19 is an odd number.
Total number of all odd numbers from 1 to 19 is 10
Sum of all the odd numbers from 1 to 19 are 100
The sum of all odd numbers is a perfect square: 100 = 10
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.
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Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".
The spelling of 19 in words is "nineteen", meaning that:
19 is an aban number (a number without the letter a)
19 is not an eban number (as it contains the letter e)
19 is not an iban number (as it contains the letter i)
19 is an oban number (a number without the letter o)
19 is not a tban number (as it contains the letter t)
19 is an uban number (a number without the letter u)
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Numeral systems

How to write 19 in other number systems?
Bengali numerals১৯
Eastern Arabic numerals١٩
Hieroglyphs numeralsused in Ancient Egypt𓎆𓐂
Khmer numerals១៩
Japanese numerals十九
Roman numeralsXIX
Thai numerals๑๙
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Translation

How do you say 19 in 38 different languages?
Arabicتسعة عشر
Croatiandevetnaest
Czechdevatenáct
Danish nitten
Dutchnegentien
Estonianwuiasieke
Faroesenítjan
Filipinolabíng-siyám
Finnishyhdeksäntoista
Frenchdix-neuf
Greekδεκα­εννέα
Germanneunzehn
Hebrewתשע עשרה
Hindiउन्नीस
Hungariantizen­kilenc
Icelandicnítján
Indonesiansembilan belas
Italiandiciannove
Japanese十九
Korean십구
Latviandeviņpadsmit
Lithuaniandevyniolika
Norwegiannitten
Persianنوزده
Polishdziewiętnaście
Portuguesedezenove
Romaniannouăsprezece
Russianдевятнадцать
Serbianдеветнаест
Slovakdevätnásť
Slovenedevetnajst
Spanish diecinueve
Swahilikumi na tisa
Swedishnitton
Thaiสิบ​เก้า
Turkishon dokuz
Ukrainianдевʼятнадцять
Vietnamesemười chín
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Miscellaneous

Number 19 reversed91
ASCII Code19
Unicode CharacterU+0013
Unix TimestampThu, 01 Jan 1970 00:00:19 +0000
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