18406542897087471090

Names of 18406542897087471090

• Cardinal: 18406542897087471090 can be written as Eighteen quintillion, four hundred six quadrillion, five hundred forty-two trillion, eight hundred ninety-seven billion, eighty-seven million, four hundred seventy-one thousand and ninety.

Scientific notation

• Scientific notation: 1.840654289708747109 × 10¹⁹

Factors of 18406542897087471090

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3549968

Divisors of 18406542897087471090

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 607 1214 1821 2203 3035 3642 4406 5463 6070 6609 9105 10926 11015 13218 14431 16389 18210 19827 22030 27315 28862 32778 33045 39654 43293 54630 59481 66090 72155 81945 86586 99135 118962 129879 144310 163890 198270 216465 259758 297405 389637 432930 594810 649395 779274 1298790 1337221 1948185 2674442 3532717 3896370 4011663 6686105 7065434 8023326 8759617 10598151 12034989 13372210 17519234 17663585 20058315 21196302 24069978 26278851 31791493 31794453 35327170 36104967 40116630 43798085 52557702 52990755 60174945 63582986 63588906 72209934 78836553 87596170 95374479 95383359 105981510 120349890 131394255 157673106 158957465 158972265 180524835 190748958 190766718 236509659 262788510 286123437 317914930 317944530 361049670 394182765 473019318 476872395 476916795 572246874 788365530 858370311 953744790 953833590 1182548295 1430617185 1716740622 2144359219 2365096590 2861234370 4288718438 4291851555 6433077657 7782575551 8583703110 10721796095 12866155314 15565151102 19297436251 19299232971 21443592190 23347726653 32165388285 38594872502 38598465942 38912877755 46695453306 50980639027 57892308753 57897698913 64330776570 70043179959 77825755510 96487181255 96496164855 101961278054 115784617506 115795397826 116738633265 140086359918 152941917081 173676926259 192974362510 192992329710 210129539877 233477266530 254903195135 289461543765 289488494565 305883834162 347353852518 350215899795 420259079754 458825751243 509806390270 521030778777 578923087530 578976989130 700431799590 764709585405 868384631295 917651502486 1042061557554 1050647699385 1376477253729 1529419170810 1736769262590 2101295398770 2294128756215 2605153893885 2752954507458 4588257512430 4724023359457 5210307787770 6882386268645 9448046718914 13764772537290 14172070078371 23620116797285 28344140156742 30945247889389 42516210235113 47240233594570 61890495778778 70860350391855 85032420470226 92835743668167 112310347776481 127548630705339 141720700783710 154726239446945 185671487336334 212581051175565 224620695552962 255097261410678 278507231004501 309452478893890 336931043329443 425162102351130 464178718340835 557014462009002 561551738882405 637743153526695 673862086658886 835521693013503 928357436681670 1010793129988329 1123103477764810 1275486307053390 1392536155022505 1671043386027006 1684655216647215 2021586259976658 2785072310045010 3032379389964987 3369310433294430 4177608465067515 5053965649941645 6064758779929974 8355216930135030 10107931299883290 15161896949824935 30323793899649870 68172381100323967 136344762200647934 204517143300971901 340861905501619835 409034286601943802 613551429902915703 681723811003239670 1022585716504859505 1227102859805831406 1840654289708747109 2045171433009719010 3067757149514578515 3681308579417494218 6135514299029157030 9203271448543735545 18406542897087471090
• Sum of all divisors σ(n): 49190717498254295040
• Sum of proper divisors (its aliquot sum) s(n): 30784174601166823950
• 18406542897087471090 is an abundant number, because the sum of its proper divisors (30784174601166823950) is greater than itself. Its abundance is 12377631704079352860

Bases of 18406542897087471090

• Binary: 1111111101110001001011010011111000101011111000110101110111110010₂
• Hexadecimal: 0xFF712D3E2BE35DF2
• Base-36: 3VUE6WGL3MIGI

Squares and roots of 18406542897087471090

• 18406542897087471090 squared (18406542897087471090²) is 338800821422321233349672346651585788100
• 18406542897087471090 cubed (18406542897087471090³) is 6236151853078427612107396838148308313042674184813616029000
• The square root of 18406542897087471090 is 4290284710.4927047125
• The cube root of 18406542897087471090 is 2640325.1291244949

Scales and comparisons

• 18,406,542,897,087,471,090 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 18,406,542,897,087,471,090 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 18406542897087471090 cubic inches would be around 220027.1 feet tall.

Recreational maths with 18406542897087471090

• 18406542897087471090 backwards is 09017478079824560481
• 18406542897087471090 is a Harshad number.
• The number of decimal digits it has is: 20
• The sum of 18406542897087471090's digits is 90
• More coming soon!