18017818390

Names of 18017818390

• Cardinal: 18017818390 can be written as Eighteen billion, seventeen million, eight hundred eighteen thousand, three hundred ninety.

Scientific notation

• Scientific notation: 1.801781839 × 10¹⁰

Factors of 18017818390

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 192

Divisors of 18017818390

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 5 10 11 13 17 22 26 34 55 65 71 73 85 110 121 130 142 143 146 169 170 187 221 242 286 338 355 365 374 442 605 710 715 730 781 803 845 923 935 949 1105 1207 1210 1241 1430 1562 1573 1606 1690 1846 1859 1870 1898 2057 2210 2414 2431 2482 2873 3146 3718 3905 4015 4114 4615 4745 4862 5183 5746 6035 6205 7810 7865 8030 8591 8833 9230 9295 9490 10153 10285 10366 10439 11999 12070 12155 12337 12410 13277 13651 14365 15691 15730 16133 17182 17666 18590 20306 20449 20570 20878 23998 24310 24674 25915 26554 26741 27302 28730 31382 31603 32266 40898 42955 44165 50765 51830 52195 53482 57013 59995 61685 63206 66385 67379 68255 78455 80665 85910 88111 88330 101530 102245 104390 111683 114026 114829 119990 123370 131989 132770 133705 134758 135707 136510 146047 150161 156910 158015 161330 172601 176222 177463 203983 204490 209729 223366 229658 263978 267410 271414 285065 292094 300322 316030 336895 345202 347633 354926 407966 419458 440555 558415 570130 574145 627143 659945 673790 678535 695266 730235 741169 750805 863005 875927 881110 887315 969221 1019915 1048645 1116830 1145443 1148290 1254286 1319890 1357070 1451879 1460470 1482338 1492777 1501610 1726010 1738165 1751854 1774630 1898611 1938442 1952093 2039830 2097290 2243813 2290886 2307019 2903758 2985554 3135715 3476330 3705845 3797222 3904186 4379635 4487626 4614038 4846105 5727215 6271430 7259395 7411690 7463885 8152859 8759270 9493055 9635197 9692210 9760465 10661431 11219065 11454430 11535095 12599873 14518790 14890759 14927770 16305718 18986110 19270394 19520930 21322862 22438130 23070190 24681943 25199746 25377209 29781518 40764295 48175985 49363886 50754418 53307155 62999365 74453795 81528590 96351970 105987167 106614310 123409715 125998730 126886045 138598603 148907590 163798349 211974334 246819430 253772090 277197206 327596698 529935835 692993015 818991745 1059871670 1385986030 1637983490 1801781839 3603563678 9008909195 18017818390
• Sum of all divisors σ(n): 42015734208
• Sum of proper divisors (its aliquot sum) s(n): 23997915818
• 18017818390 is an abundant number, because the sum of its proper divisors (23997915818) is greater than itself. Its abundance is 5980097428

Bases of 18017818390

• Binary: 10000110001111100100001011100010110₂
• Hexadecimal: 0x431F21716
• Base-36: 89ZCDNA

Squares and roots of 18017818390

• 18017818390 squared (18017818390²) is 324641779535022192100
• 18017818390 cubed (18017818390³) is 5849336625468448501877492719000
• The square root of 18017818390 is 134230.4674431257
• The cube root of 18017818390 is 2621.6058755417

Scales and comparisons

• 18,017,818,390 seconds is equal to 572 years, 47 weeks, 2 days, 13 hours, 33 minutes, 10 seconds.
• To count from 1 to 18,017,818,390 would take you about one thousand, one hundred forty-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 18017818390 cubic inches would be around 218.5 feet tall.

Recreational maths with 18017818390

• 18017818390 backwards is 09381871081
• The number of decimal digits it has is: 11
• The sum of 18017818390's digits is 46
• More coming soon!