| Nominal | 18481 |
| Cardinal | eighteen thousand four hundred eighty-one |
Cardinal eighteen thousand four hundred eighty-one | |
| Ordinal | 18,481st |
| Number of digits | 5 |
| Sum of digits | 22 |
| Product of digits | 256 |
| Number parity | Odd |
| Prime factorization | 18481 |
| Prime factors | 18481 |
| Number of distinct prime factors ω(n) | 1 |
| Total number of prime factors Ω(n) | 1 |
| Sum of prime factors | 18481 |
| Product of prime factors | 18481 |
| Is 18481 a prime number? | Yes |
| Is 18481 a semiprime number? | No |
| Is 18481 a Chen prime number? | No |
| Is 18481 a Mersenne prime number? | No |
| Is 18481 a Catalan number? | No |
| Is 18481 a Fibonacci number? | No |
| Is 18481 a Idoneal number? | No |
| Square of 18481 (n2) | 341547361 |
| Cube of 18481 (n3) | 6312136778641 |
| Square root of 18481 | 135.94484175577 |
| Natural Logarithm (ln) of 18481 | 9.8244984562858 |
| Decimal Logarithm (log) of 18481 | 4.2667254670319 |
| Sine of 18481 | 0.83579604191738 |
| Cosecant of 18481 | 1.1964641489638 |
| Cosine of 18481 | -0.5490400498281 |
| Secant of 18481 | -1.8213607555826 |
| Tangent of 18481 | -1.5222861104196 |
| Cotangent of 18481 | -0.65690673596462 |
| The spelling of 18481 in words is "eighteen thousand four hundred eighty-one", meaning that: |
| 18481 is not an aban number (as it contains the letter a) |
| 18481 is not an eban number (as it contains the letter e) |
| 18481 is not an iban number (as it contains the letter i) |
| 18481 is not an oban number (as it contains the letter o) |
| 18481 is not a tban number (as it contains the letter t) |
| 18481 is not an uban number (as it contains the letter u) |
| Bengali numerals | ১৮৪৮১ |
| Eastern Arabic numerals | ١٨٬٤٨١ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍥𓎍𓏺 |
| Khmer numerals | ១៨៤៨១ |
| Japanese numerals | 一万八千四百八十一 |
| Roman numerals | n/a |
| Thai numerals | ๑๘๔๘๑ |
| Arabic | ثمانية عشر ألف و أربعة مائة و واحد و ثمانون |
| Croatian | osamnaest tisuća četiristo osamdeset i jedan |
| Czech | osmnáct tisíc čtyři sta osmdesát jeden |
| Danish | atten tusinde fire hundrede en og firs |
| Dutch | achttienduizend vierhonderdéénentachtig |
| Estonian | akpe wuienyi alafa ene blaenyi vɔ ɖekɛ |
| Faroese | átjan tusin og fýrehundraðogáttatiein |
| Filipino | labíng-walóng libó’t ápat na daán at walóng pû’t isá |
| Finnish | kahdeksantoistatuhattaneljäsataakahdeksankymmentäyksi |
| French | dix-huit mille quatre cent quatre-vingt-un |
| Greek | δεκαοκτώ χίλιάδες τετρακόσια ογδόντα ένα |
| German | achtzehntausendvierhunderteinundachtzig |
| Hebrew | שמונה עשר אלף ארבע מאות שמונים ואחת |
| Hindi | अठारह हज़ार चार सौ इक्यासी |
| Hungarian | tizennyolcezernégyszáznyolcvanegy |
| Icelandic | átján þúsund og fjögurhundrað og áttatíu og einn |
| Indonesian | delapan belas ribu empat ratus delapan puluh satu |
| Italian | diciottomilaquattrocentoottantuno |
| Japanese | 一万八千四百八十一 |
| Korean | 만 팔천사백팔십일 |
| Latvian | astoņpadsmit tūkstoši četrsimt astoņdesmit viens |
| Lithuanian | aštuoniolika tūkstančių keturi šimtai aštuoniasdešimt vienas |
| Norwegian | atten tusen fire hundre og åttién |
| Persian | هجده هزار و چهارصد و هشتاد و یک |
| Polish | osiemnaście tysięcy czterysta osiemdziesiąt jeden |
| Portuguese | dezoito mil quatrocentos e oitenta e um |
| Romanian | optsprezece mii patru sute optzeci şi unu |
| Russian | восемнадцать тысяч четыреста восемьдесят один |
| Serbian | осамнаест хиљада четиристо осамдесет и један |
| Slovak | osemnásť tisíc štyristo osemdesiatjeden |
| Slovene | asemnajst tisuću štiristo osemdeset ena |
| Spanish | dieciocho mil cuatrocientos ochenta y uno |
| Swahili | elfu kumi na nane, mia nne na themanini na moja |
| Swedish | artontusenfyrahundraåttioen |
| Thai | หนึ่งหมื่นแปดพันสี่ร้อยแปดสิบเอ็ด |
| Turkish | on sekiz bin dört yüz seksen bir |
| Ukrainian | вісімнадцять тисяч чотириста вісімдесят один |
| Vietnamese | mười tám nghìn bốn trăm tám mươi mốt |
| Number 18481 reversed | 18481 | |
| Unicode Character | U+4831 | 䠱 |
| Unix Timestamp | Thu, 01 Jan 1970 05:08:01 +0000 | |