18998139944

Names of 18998139944

• Cardinal: 18998139944 can be written as Eighteen billion, nine hundred ninety-eight million, one hundred thirty-nine thousand, nine hundred forty-four.

Scientific notation

• Scientific notation: 1.8998139944 × 10¹⁰

Factors of 18998139944

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1219

Divisors of 18998139944

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 7 8 14 28 31 43 56 62 86 124 172 217 248 301 307 344 434 602 614 829 868 1204 1228 1333 1658 1736 2149 2408 2456 2666 3316 4298 5332 5803 6632 8596 9331 9517 10664 11606 13201 17192 18662 19034 23212 25699 26402 35647 37324 38068 46424 51398 52804 66619 71294 74648 76136 92407 102796 105608 133238 142588 179893 184814 205592 249529 254503 266476 285176 359786 369628 409231 499058 509006 532952 719572 739256 818462 998116 1018012 1105057 1439144 1636924 1781521 1996232 2036024 2210114 2864617 3273848 3563042 4420228 5729234 7126084 7735399 7889593 8840456 10943629 11458468 14252168 15470798 15779186 21887258 22916936 30941596 31558372 43774516 55227151 61883192 63116744 76605403 87549032 110454302 153210806 220908604 306421612 339252499 441817208 612843224 678504998 1357009996 2374767493 2714019992 4749534986 9499069972 18998139944
• Sum of all divisors σ(n): 43192934400
• Sum of proper divisors (its aliquot sum) s(n): 24194794456
• 18998139944 is an abundant number, because the sum of its proper divisors (24194794456) is greater than itself. Its abundance is 5196654512

Bases of 18998139944

• Binary: 10001101100011000001001110000101000₂
• Hexadecimal: 0x46C609C28
• Base-36: 8Q702LK

Squares and roots of 18998139944

• 18998139944 squared (18998139944²) is 360929321331808323136
• 18998139944 cubed (18998139944³) is 6856985756554638981521700944384
• The square root of 18998139944 is 137833.7402235027
• The cube root of 18998139944 is 2668.3145690997

Scales and comparisons

• 18,998,139,944 seconds is equal to 604 years, 4 weeks, 1 day, 21 hours, 5 minutes, 44 seconds.
• To count from 1 to 18,998,139,944 would take you about one thousand, two hundred eight 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 18998139944 cubic inches would be around 222.4 feet tall.

Recreational maths with 18998139944

• 18998139944 backwards is 44993189981
• The number of decimal digits it has is: 11
• The sum of 18998139944's digits is 65
• More coming soon!