18738912829

Names of 18738912829

• Cardinal: 18738912829 can be written as Eighteen billion, seven hundred thirty-eight million, nine hundred twelve thousand, eight hundred twenty-nine.

Scientific notation

• Scientific notation: 1.8738912829 × 10¹⁰

Factors of 18738912829

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 415

Divisors of 18738912829

• Number of divisors d(n): 72
• Complete list of divisors:
  1 7 13 31 53 91 169 217 311 371 403 689 961 1183 1643 2177 2821 4043 4823 5239 6727 8957 9641 11501 12493 16483 21359 28301 36673 50933 52559 62699 67487 87451 115381 125333 149513 162409 214279 277667 298871 356531 367913 510973 662129 877331 1136863 1499953 1629329 1943669 2092097 2785627 3576811 3885323 4634903 6642649 8607677 11405303 15840163 19499389 27197261 46498543 50509199 60253739 86354437 110881141 205922119 353564393 604481059 1441454833 2676987547 18738912829
• Sum of all divisors σ(n): 24492813696
• Sum of proper divisors (its aliquot sum) s(n): 5753900867
• 18738912829 is a deficient number, because the sum of its proper divisors (5753900867) is less than itself. Its deficiency is 12985011962

Bases of 18738912829

• Binary: 10001011100111011010001111000111101₂
• Hexadecimal: 0x45CED1E3D
• Base-36: 8LWNXOD

Squares and roots of 18738912829

• 18738912829 squared (18738912829²) is 351146854012860783241
• 18738912829 cubed (18738912829³) is 6580110287524587062065763098789
• The square root of 18738912829 is 136890.1487653513
• The cube root of 18738912829 is 2656.1226807207

Scales and comparisons

• 18,738,912,829 seconds is equal to 595 years, 43 weeks, 4 days, 13 hours, 33 minutes, 49 seconds.
• To count from 1 to 18,738,912,829 would take you about one thousand, one hundred ninety-one 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 18738912829 cubic inches would be around 221.3 feet tall.

Recreational maths with 18738912829

• 18738912829 backwards is 92821983781
• The number of decimal digits it has is: 11
• The sum of 18738912829's digits is 58
• More coming soon!