18012429939

Names of 18012429939

• Cardinal: 18012429939 can be written as Eighteen billion, twelve million, four hundred twenty-nine thousand, nine hundred thirty-nine.

Scientific notation

• Scientific notation: 1.8012429939 × 10¹⁰

Factors of 18012429939

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 883

Divisors of 18012429939

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 7 21 49 127 147 337 343 381 409 889 1011 1029 1227 2359 2667 2863 6223 7077 8589 16513 18669 20041 42799 43561 49539 51943 60123 115591 128397 130683 137833 140287 155829 299593 346773 363601 413499 420861 898779 964831 1090803 2097151 2545207 2894493 6291453 6753817 7635621 14680057 17504791 17816449 20261451 44040171 47276719 52514373 53449347 122533537 141830157 367600611 857734759 2573204277 6004143313 18012429939
• Sum of all divisors σ(n): 28381184000
• Sum of proper divisors (its aliquot sum) s(n): 10368754061
• 18012429939 is a deficient number, because the sum of its proper divisors (10368754061) is less than itself. Its deficiency is 7643675878

Bases of 18012429939

• Binary: 10000110001100111111101111001110011₂
• Hexadecimal: 0x4319FDE73
• Base-36: 89W4VW3

Squares and roots of 18012429939

• 18012429939 squared (18012429939²) is 324447632307383543721
• 18012429939 cubed (18012429939³) is 5844090245811178993676055863019
• The square root of 18012429939 is 134210.3943031239
• The cube root of 18012429939 is 2621.3445082857

Scales and comparisons

• 18,012,429,939 seconds is equal to 572 years, 38 weeks, 3 days, 4 hours, 45 minutes, 39 seconds.
• To count from 1 to 18,012,429,939 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 18012429939 cubic inches would be around 218.4 feet tall.

Recreational maths with 18012429939

• 18012429939 backwards is 93992421081
• The number of decimal digits it has is: 11
• The sum of 18012429939's digits is 48
• More coming soon!