138842698491

Names of 138842698491

• Cardinal: 138842698491 can be written as One hundred thirty-eight billion, eight hundred forty-two million, six hundred ninety-eight thousand, four hundred ninety-one.

Scientific notation

• Scientific notation: 1.38842698491 × 10¹¹

Factors of 138842698491

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 374

Divisors of 138842698491

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 21 49 63 107 147 257 321 441 749 771 963 1799 2247 2313 5243 5397 6741 11449 12593 15729 16191 27499 34347 37779 47187 80143 82497 103041 113337 192493 240429 247491 561001 577479 721287 1225043 1347451 1683003 1732437 2942393 3675129 4042353 5049009 8575301 8827179 11025387 12127059 20596751 25725903 26481537 60027107 61790253 77177709 144177257 180081321 185370759 314836051 432531771 540243963 944508153 1297595313 2203852357 2833524459 6611557071 15426966499 19834671213 46280899497 138842698491
• Sum of all divisors σ(n): 236410714800
• Sum of proper divisors (its aliquot sum) s(n): 97568016309
• 138842698491 is a deficient number, because the sum of its proper divisors (97568016309) is less than itself. Its deficiency is 41274682182

Bases of 138842698491

• Binary: 10000001010011101010110111001011111011₂
• Hexadecimal: 0x2053AB72FB
• Base-36: 1RS7CVSR

Squares and roots of 138842698491

• 138842698491 squared (138842698491²) is 19277294924262733677081
• 138842698491 cubed (138842698491³) is 2676511646891495412394389039984771
• The square root of 138842698491 is 372616.0201749249
• The cube root of 138842698491 is 5178.1466823789

Scales and comparisons

• 138,842,698,491 seconds is equal to 4,414 years, 39 weeks, 6 days, 16 hours, 14 minutes, 51 seconds.
• To count from 1 to 138,842,698,491 would take you about eight thousand, eight hundred twenty-nine 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 138842698491 cubic inches would be around 431.5 feet tall.

Recreational maths with 138842698491

• 138842698491 backwards is 194896248831
• 138842698491 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138842698491's digits is 63
• More coming soon!