18331981479

Names of 18331981479

• Cardinal: 18331981479 can be written as Eighteen billion, three hundred thirty-one million, nine hundred eighty-one thousand, four hundred seventy-nine.

Scientific notation

• Scientific notation: 1.8331981479 × 10¹⁰

Factors of 18331981479

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 507

Divisors of 18331981479

• Number of divisors d(n): 168
• Complete list of divisors:
  1 3 7 9 21 23 27 49 53 63 69 81 147 159 161 189 207 243 371 421 441 477 483 567 621 729 1113 1127 1219 1263 1323 1431 1449 1701 1863 2597 2947 3339 3381 3657 3789 3969 4293 4347 5103 5589 7791 8533 8841 9683 10017 10143 10971 11367 11907 12879 13041 16767 20629 22313 23373 25599 26523 29049 30051 30429 32913 34101 35721 38637 39123 59731 61887 66939 67781 70119 76797 79569 87147 90153 91287 98739 102303 117369 156191 179193 185661 200817 203343 210357 230391 238707 261441 270459 273861 296217 306909 468573 474467 513199 537579 556983 602451 610029 631071 691173 716121 784323 821583 888651 1093337 1405719 1423401 1539597 1612737 1670949 1807353 1830087 1893213 2073519 2148363 2352969 3280011 3592393 4217157 4270203 4618791 4838211 5012847 5422059 5490261 6220557 7058907 9840033 10777179 12651471 12810609 13856373 14514633 15038541 16266177 16470783 25146751 29520099 32331537 37954413 38431827 41569119 43543899 49412349 75440253 88560297 96994611 113863239 115295481 124707357 226320759 265680891 290983833 345886443 374122071 678962277 797042673 872951499 2036886831 2618854497 6110660493 18331981479
• Sum of all divisors σ(n): 34073164512
• Sum of proper divisors (its aliquot sum) s(n): 15741183033
• 18331981479 is a deficient number, because the sum of its proper divisors (15741183033) is less than itself. Its deficiency is 2590798446

Bases of 18331981479

• Binary: 10001000100101010111101011010100111₂
• Hexadecimal: 0x444ABD6A7
• Base-36: 8F6DZFR

Squares and roots of 18331981479

• 18331981479 squared (18331981479²) is 336061544946399027441
• 18331981479 cubed (18331981479³) is 6160674017761513018792024765239
• The square root of 18331981479 is 135395.6479322729
• The cube root of 18331981479 is 2636.7551520499

Scales and comparisons

• 18,331,981,479 seconds is equal to 582 years, 46 weeks, 5 days, 17 hours, 4 minutes, 39 seconds.
• To count from 1 to 18,331,981,479 would take you about one thousand, one hundred sixty-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 18331981479 cubic inches would be around 219.7 feet tall.

Recreational maths with 18331981479

• 18331981479 backwards is 97418913381
• The number of decimal digits it has is: 11
• The sum of 18331981479's digits is 54
• More coming soon!