138926942991

Names of 138926942991

• Cardinal: 138926942991 can be written as One hundred thirty-eight billion, nine hundred twenty-six million, nine hundred forty-two thousand, nine hundred ninety-one.

Scientific notation

• Scientific notation: 1.38926942991 × 10¹¹

Factors of 138926942991

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7551

Divisors of 138926942991

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 9 27 37 59 111 177 331 333 531 993 999 1593 2183 2979 6549 7121 8937 12247 19529 19647 21363 36741 58587 58941 64089 110223 175761 192267 263477 330669 420139 527283 722573 790431 1260417 2167719 2357051 2371293 3781251 6503157 7071153 7113879 11343753 15545143 19509471 21213459 46635429 63640377 87210887 139066009 139906287 261632661 417198027 419718861 784897983 1251594081 2354693949 3754782243 5145442333 15436326999 46308980997 138926942991
• Sum of all divisors σ(n): 215642764800
• Sum of proper divisors (its aliquot sum) s(n): 76715821809
• 138926942991 is a deficient number, because the sum of its proper divisors (76715821809) is less than itself. Its deficiency is 62211121182

Bases of 138926942991

• Binary: 10000001011000101100001110101100001111₂
• Hexadecimal: 0x2058B0EB0F
• Base-36: 1RTLIJ9R

Squares and roots of 138926942991

• 138926942991 squared (138926942991²) is 19300695488824564026081
• 138926942991 cubed (138926942991³) is 2681386621862581084051784524148271
• The square root of 138926942991 is 372729.0476888003
• The cube root of 138926942991 is 5179.1937718389

Scales and comparisons

• 138,926,942,991 seconds is equal to 4,417 years, 23 weeks, 1 day, 17 hours, 29 minutes, 51 seconds.
• To count from 1 to 138,926,942,991 would take you about eight thousand, eight hundred thirty-four 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 138926942991 cubic inches would be around 431.6 feet tall.

Recreational maths with 138926942991

• 138926942991 backwards is 199249629831
• The number of decimal digits it has is: 12
• The sum of 138926942991's digits is 63
• More coming soon!