18131515605

Names of 18131515605

• Cardinal: 18131515605 can be written as Eighteen billion, one hundred thirty-one million, five hundred fifteen thousand, six hundred five.

Scientific notation

• Scientific notation: 1.8131515605 × 10¹⁰

Factors of 18131515605

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 53183

Divisors of 18131515605

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 7 9 15 19 21 27 35 45 57 63 95 105 133 135 171 189 285 315 361 399 513 665 855 945 1083 1197 1805 1995 2527 2565 3249 3591 5415 5985 7581 9747 12635 16245 17955 22743 37905 48735 53149 68229 113715 159447 265745 341145 372043 478341 797235 1009831 1116129 1435023 1860215 2391705 3029493 3348387 5049155 5580645 7068817 7175115 9088479 10045161 15147465 16741935 19186789 21206451 27265437 35344085 45442395 50225805 57560367 63619353 95933945 106032255 134307523 136327185 172681101 190858059 287801835 318096765 402922569 518043303 671537615 863405505 954290295 1208767707 2014612845 2590216515 3626303121 6043838535 18131515605
• Sum of all divisors σ(n): 38880288000
• Sum of proper divisors (its aliquot sum) s(n): 20748772395
• 18131515605 is an abundant number, because the sum of its proper divisors (20748772395) is greater than itself. Its abundance is 2617256790

Bases of 18131515605

• Binary: 10000111000101110001111100011010101₂
• Hexadecimal: 0x438B8F8D5
• Base-36: 8BV1AZ9

Squares and roots of 18131515605

• 18131515605 squared (18131515605²) is 328751858134358516025
• 18131515605 cubed (18131515605³) is 5960769445935867619971930070125
• The square root of 18131515605 is 134653.3163535157
• The cube root of 18131515605 is 2627.1086599477

Scales and comparisons

• 18,131,515,605 seconds is equal to 576 years, 27 weeks, 2 days, 12 hours, 6 minutes, 45 seconds.
• To count from 1 to 18,131,515,605 would take you about one thousand, one hundred fifty-three 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 18131515605 cubic inches would be around 218.9 feet tall.

Recreational maths with 18131515605

• 18131515605 backwards is 50651513181
• The number of decimal digits it has is: 11
• The sum of 18131515605's digits is 36
• More coming soon!