138531564639

Names of 138531564639

• Cardinal: 138531564639 can be written as One hundred thirty-eight billion, five hundred thirty-one million, five hundred sixty-four thousand, six hundred thirty-nine.

Scientific notation

• Scientific notation: 1.38531564639 × 10¹¹

Factors of 138531564639

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 62242

Divisors of 138531564639

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 13 17 19 39 51 57 59 117 153 171 177 221 247 323 531 663 741 767 969 1003 1121 1989 2223 2301 2907 3009 3363 4199 6903 9027 10089 12597 13039 14573 19057 37791 39117 43719 57171 62131 117351 131157 171513 186393 247741 559179 743223 807703 1056227 1180489 2229669 2423109 3168681 3541467 3665729 7269327 9506043 10624401 10997187 13730951 15346357 20068313 32991561 41192853 46039071 47654477 60204939 62317393 69648851 123578559 138117213 142963431 180614817 186952179 208946553 260888069 428890293 560856537 626839659 782664207 810126109 905435063 1184030467 2347992621 2430378327 2716305189 3552091401 7291134981 8148915567 10656274203 15392396071 46177188213 138531564639
• Sum of all divisors σ(n): 244253318400
• Sum of proper divisors (its aliquot sum) s(n): 105721753761
• 138531564639 is a deficient number, because the sum of its proper divisors (105721753761) is less than itself. Its deficiency is 32809810878

Bases of 138531564639

• Binary: 10000001000001000111111110110001011111₂
• Hexadecimal: 0x20411FEC5F
• Base-36: 1RN247DR

Squares and roots of 138531564639

• 138531564639 squared (138531564639²) is 19190994401329435200321
• 138531564639 cubed (138531564639³) is 2658558481394455759986630525049119
• The square root of 138531564639 is 372198.2867222793
• The cube root of 138531564639 is 5174.2758710653

Scales and comparisons

• 138,531,564,639 seconds is equal to 4,404 years, 45 weeks, 3 days, 14 hours, 10 minutes, 39 seconds.
• To count from 1 to 138,531,564,639 would take you about eight thousand, eight hundred 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 138531564639 cubic inches would be around 431.2 feet tall.

Recreational maths with 138531564639

• 138531564639 backwards is 936465135831
• The number of decimal digits it has is: 12
• The sum of 138531564639's digits is 54
• More coming soon!