18642613990

Names of 18642613990

• Cardinal: 18642613990 can be written as Eighteen billion, six hundred forty-two million, six hundred thirteen thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.864261399 × 10¹⁰

Factors of 18642613990

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 124

Divisors of 18642613990

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 5 7 10 11 13 14 19 22 26 35 38 49 55 65 67 70 77 91 95 98 110 121 130 133 134 143 154 182 190 209 242 245 247 266 286 335 361 385 418 455 469 490 494 539 605 637 665 670 715 722 737 770 847 871 910 931 938 1001 1045 1078 1210 1235 1273 1274 1330 1430 1463 1474 1573 1694 1729 1742 1805 1862 2002 2090 2299 2345 2470 2527 2546 2695 2717 2926 3146 3185 3283 3458 3610 3685 3971 4235 4355 4598 4655 4690 4693 5005 5054 5159 5390 5434 5929 6097 6365 6370 6566 7007 7315 7370 7865 7942 8107 8470 8645 8710 8911 9310 9386 9581 10010 10241 10318 11011 11495 11858 12103 12194 12635 12730 13585 14003 14014 14630 15730 16093 16214 16415 16549 17290 17689 17822 19019 19162 19855 20482 22022 22990 23465 24187 24206 25270 25795 27170 27797 28006 29645 29887 30485 32186 32830 32851 33098 35035 35378 36113 38038 39710 40535 42679 43681 44555 46930 47905 48374 51205 51590 51623 55055 55594 56749 59290 59774 60515 60970 62377 65702 67067 70015 70070 72226 77077 80465 81070 82745 85358 87362 88445 89110 95095 95810 98021 102410 103246 105391 110110 112651 113498 115843 120935 121030 124754 133133 134134 138985 140030 149435 154033 154154 160930 164255 165490 169309 176890 180565 182039 190190 194579 196042 209209 210782 213395 218405 225302 229957 231686 241870 258115 266057 266266 277970 283745 298870 305767 308066 311885 314431 328510 335335 338618 361130 361361 364078 385385 389158 397243 418418 426790 436810 459914 469469 490105 516230 526955 532114 563255 567490 567853 579215 611534 623770 628862 665665 670670 686147 722722 737737 770165 770770 794486 810901 846545 910195 938938 972895 980210 1046045 1053910 1078231 1126510 1135706 1149785 1158430 1185163 1274273 1330285 1331330 1372294 1464463 1475474 1528835 1540330 1572155 1621802 1693090 1806805 1820390 1862399 1945790 1986215 2002429 2092090 2140369 2156462 2201017 2299570 2347345 2370326 2529527 2548546 2660570 2839265 2926627 2928926 3057670 3144310 3430735 3458741 3613610 3688685 3724798 3972430 3974971 4004858 4054505 4280738 4402034 4694690 5059054 5164159 5391155 5678530 5853254 5925815 6371365 6861470 6917482 7322315 7377370 7547617 7949942 8109010 8919911 9311995 10012145 10328318 10701845 10782310 11005085 11851630 12647635 12742730 13036793 14017003 14633135 14644630 15095234 15407119 17293705 17839822 18623990 19874855 20024290 20486389 21403690 22010170 24211187 25295270 25820795 26073586 27824797 28034006 29266270 30814238 34587410 37738085 38046151 39749710 40972778 44599555 48422374 51641590 55649594 65183965 70085015 75476170 76092302 77035595 89199110 98119021 102431945 121055935 130367930 139123985 140170030 143404723 154071190 169478309 190230755 196238042 204863890 242111870 266323057 278247970 286809446 338956618 380461510 490595105 532646114 717023615 847391545 981190210 1331615285 1434047230 1694783090 1864261399 2663230570 3728522798 9321306995 18642613990
• Sum of all divisors σ(n): 49494954096
• Sum of proper divisors (its aliquot sum) s(n): 30852340106
• 18642613990 is an abundant number, because the sum of its proper divisors (30852340106) is greater than itself. Its abundance is 12209726116

Bases of 18642613990

• Binary: 10001010111001011111011011011100110₂
• Hexadecimal: 0x4572FB6E6
• Base-36: 8KBBX0M

Squares and roots of 18642613990

• 18642613990 squared (18642613990²) is 347547056380143720100
• 18642613990 cubed (18642613990³) is 6479185615455786074546904199000
• The square root of 18642613990 is 136537.9580556265
• The cube root of 18642613990 is 2651.5649467737

Scales and comparisons

• 18,642,613,990 seconds is equal to 592 years, 40 weeks, 2 days, 23 hours, 53 minutes, 10 seconds.
• To count from 1 to 18,642,613,990 would take you about one thousand, one hundred eighty-five 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 18642613990 cubic inches would be around 221 feet tall.

Recreational maths with 18642613990

• 18642613990 backwards is 09931624681
• 18642613990 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18642613990's digits is 49
• More coming soon!