18138364128

Names of 18138364128

• Cardinal: 18138364128 can be written as Eighteen billion, one hundred thirty-eight million, three hundred sixty-four thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8138364128 × 10¹⁰

Factors of 18138364128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 723947

Divisors of 18138364128

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 29 32 36 48 54 58 72 87 96 108 116 144 174 216 232 261 288 348 432 464 522 696 783 864 928 1044 1392 1566 2088 2784 3132 4176 6264 8352 12528 25056 723913 1447826 2171739 2895652 4343478 5791304 6515217 8686956 11582608 13030434 17373912 19545651 20993477 23165216 26060868 34747824 39091302 41986954 52121736 62980431 69495648 78182604 83973908 104243472 125960862 156365208 167947816 188941293 208486944 251921724 312730416 335895632 377882586 503843448 566823879 625460832 671791264 755765172 1007686896 1133647758 1511530344 2015373792 2267295516 3023060688 4534591032 6046121376 9069182064 18138364128
• Sum of all divisors σ(n): 54727898400
• Sum of proper divisors (its aliquot sum) s(n): 36589534272
• 18138364128 is an abundant number, because the sum of its proper divisors (36589534272) is greater than itself. Its abundance is 18451170144

Bases of 18138364128

• Binary: 10000111001001000010111100011100000₂
• Hexadecimal: 0x4392178E0
• Base-36: 8BZ43C0

Squares and roots of 18138364128

• 18138364128 squared (18138364128²) is 329000253239917200384
• 18138364128 cubed (18138364128³) is 5967526391469829925135333425152
• The square root of 18138364128 is 134678.7441580891
• The cube root of 18138364128 is 2627.4393833447

Scales and comparisons

• 18,138,364,128 seconds is equal to 576 years, 38 weeks, 4 days, 18 hours, 28 minutes, 48 seconds.
• To count from 1 to 18,138,364,128 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 18138364128 cubic inches would be around 219 feet tall.

Recreational maths with 18138364128

• 18138364128 backwards is 82146383181
• The number of decimal digits it has is: 11
• The sum of 18138364128's digits is 45
• More coming soon!