18639036990

Names of 18639036990

• Cardinal: 18639036990 can be written as Eighteen billion, six hundred thirty-nine million, thirty-six thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.863903699 × 10¹⁰

Factors of 18639036990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 461

Divisors of 18639036990

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 49 63 70 90 98 105 113 126 147 210 226 245 294 315 331 339 441 490 565 630 662 678 735 791 882 993 1017 1130 1470 1582 1655 1695 1986 2034 2205 2317 2373 2979 3310 3390 3955 4410 4634 4746 4965 5085 5537 5958 6951 7119 7910 9930 10170 11074 11585 11865 12769 13902 14238 14895 16219 16611 20853 23170 23730 25538 27685 29790 32438 33222 34755 35595 37403 38307 41706 48657 49833 55370 63845 69510 71190 74806 76614 81095 83055 89383 97314 99666 104265 112209 114921 127690 145971 162190 166110 178766 187015 191535 208530 224418 229842 243285 249165 261821 268149 291942 336627 374030 383070 446915 486570 498330 523642 536298 561045 574605 625681 673254 729855 785463 804447 893830 1122090 1149210 1251362 1309105 1340745 1459710 1570926 1608894 1683135 1832747 1877043 2356389 2618210 2681490 3128405 3366270 3665494 3754086 3927315 4022235 4226539 4712778 5498241 5631129 6256810 7854630 8044470 8453078 9163735 9385215 10996482 11262258 11781945 12679617 16494723 18327470 18770430 21132695 23563890 25359234 27491205 28155645 29585773 32989446 38038851 42265390 54982410 56311290 59171546 63398085 76077702 82473615 88757319 126796170 147928865 164947230 177514638 190194255 207100411 266271957 295857730 380388510 414200822 443786595 532543914 621301233 887573190 1035502055 1242602466 1331359785 1863903699 2071004110 2662719570 3106506165 3727807398 6213012330 9319518495 18639036990
• Sum of all divisors σ(n): 57048706728
• Sum of proper divisors (its aliquot sum) s(n): 38409669738
• 18639036990 is an abundant number, because the sum of its proper divisors (38409669738) is greater than itself. Its abundance is 19770632748

Bases of 18639036990

• Binary: 10001010110111110010010001000111110₂
• Hexadecimal: 0x456F9223E
• Base-36: 8K978ZI

Squares and roots of 18639036990

• 18639036990 squared (18639036990²) is 347413699914588260100
• 18639036990 cubed (18639036990³) is 6475456803540770420623641099000
• The square root of 18639036990 is 136524.8585056949
• The cube root of 18639036990 is 2651.3953486957

Scales and comparisons

• 18,639,036,990 seconds is equal to 592 years, 34 weeks, 3 days, 14 hours, 16 minutes, 30 seconds.
• To count from 1 to 18,639,036,990 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 18639036990 cubic inches would be around 220.9 feet tall.

Recreational maths with 18639036990

• 18639036990 backwards is 09963093681
• The number of decimal digits it has is: 11
• The sum of 18639036990's digits is 54
• More coming soon!