18129213540

Names of 18129213540

• Cardinal: 18129213540 can be written as Eighteen billion, one hundred twenty-nine million, two hundred thirteen thousand, five hundred forty.

Scientific notation

• Scientific notation: 1.812921354 × 10¹⁰

Factors of 18129213540

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 918

Divisors of 18129213540

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 30 31 36 41 45 60 62 82 90 93 109 123 124 155 164 180 186 205 218 246 279 310 327 369 372 410 436 465 492 545 558 615 620 654 727 738 820 930 981 1090 1116 1230 1271 1308 1395 1454 1476 1635 1845 1860 1962 2180 2181 2460 2542 2790 2908 3270 3379 3635 3690 3813 3924 4362 4469 4905 5084 5580 6355 6540 6543 6758 7270 7380 7626 8724 8938 9810 10137 10905 11439 12710 13086 13407 13516 14540 15252 16895 17876 19065 19620 20274 21810 22345 22537 22878 25420 26172 26814 29807 30411 32715 33790 38130 40221 40548 43620 44690 45074 45756 50685 53628 57195 59614 60822 65430 67035 67580 67611 76260 79243 80442 89380 89421 90148 101370 112685 114390 119228 121644 130860 134070 135222 138539 149035 152055 158486 160884 178842 201105 202740 202833 225370 228780 237729 268140 268263 270444 277078 298070 304110 316972 338055 357684 396215 402210 405666 415617 447105 450740 475458 536526 554156 596140 608220 676110 692695 713187 792430 804420 811332 831234 894210 924017 950916 1014165 1073052 1188645 1246851 1341315 1352220 1385390 1426374 1584860 1662468 1788420 1848034 2028330 2078085 2377290 2456533 2493702 2682630 2770780 2772051 2852748 3248963 3565935 3696068 4056660 4156170 4620085 4754580 4913066 4987404 5365260 5544102 6234255 6497926 7131870 7369599 8312340 8316153 9240170 9746889 9826132 11088204 12282665 12468510 12995852 13860255 14263740 14739198 16244815 16632306 18480340 19493778 22108797 24565330 24937020 27720510 29240667 29478396 32489630 33264612 36847995 38987556 41580765 44217594 48734445 49130660 55441020 58481334 64979260 73695990 83161530 88435188 97468890 100717853 110543985 116962668 146203335 147391980 166323060 194937780 201435706 221087970 292406670 302153559 402871412 442175940 503589265 584813340 604307118 906460677 1007178530 1208614236 1510767795 1812921354 2014357060 3021535590 3625842708 4532303385 6043071180 9064606770 18129213540
• Sum of all divisors σ(n): 58764625920
• Sum of proper divisors (its aliquot sum) s(n): 40635412380
• 18129213540 is an abundant number, because the sum of its proper divisors (40635412380) is greater than itself. Its abundance is 22506198840

Bases of 18129213540

• Binary: 10000111000100101011101100001100100₂
• Hexadecimal: 0x43895D864
• Base-36: 8BTNYP0

Squares and roots of 18129213540

• 18129213540 squared (18129213540²) is 328668383578919331600
• 18129213540 cubed (18129213540³) is 5958499309748858005010469864000
• The square root of 18129213540 is 134644.7679637051
• The cube root of 18129213540 is 2626.9974717639

Scales and comparisons

• 18,129,213,540 seconds is equal to 576 years, 23 weeks, 3 days, 20 hours, 39 minutes.
• To count from 1 to 18,129,213,540 would take you about one thousand, one hundred fifty-two 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 18129213540 cubic inches would be around 218.9 feet tall.

Recreational maths with 18129213540

• 18129213540 backwards is 04531292181
• 18129213540 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18129213540's digits is 36
• More coming soon!