138861349842

Names of 138861349842

• Cardinal: 138861349842 can be written as One hundred thirty-eight billion, eight hundred sixty-one million, three hundred forty-nine thousand, eight hundred forty-two.

Scientific notation

• Scientific notation: 1.38861349842 × 10¹¹

Factors of 138861349842

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2172

Divisors of 138861349842

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 31 62 93 109 186 218 327 654 961 1922 2027 2883 3379 4054 5766 6081 6758 10137 11881 12162 20274 23762 35643 62837 71286 104749 125674 188511 209498 220943 314247 368311 377022 441886 628494 662829 736622 1104933 1325658 1947947 2209866 3895894 5843841 6849233 11417641 11687682 13698466 20547699 22835282 24082787 34252923 41095398 48165574 68505846 72248361 144496722 212326223 424652446 636978669 746566397 1273957338 1493132794 2239699191 4479398382 23143558307 46287116614 69430674921 138861349842
• Sum of all divisors σ(n): 289770285168
• Sum of proper divisors (its aliquot sum) s(n): 150908935326
• 138861349842 is an abundant number, because the sum of its proper divisors (150908935326) is greater than itself. Its abundance is 12047585484

Bases of 138861349842

• Binary: 10000001010100110010000000101111010010₂
• Hexadecimal: 0x2054C80BD2
• Base-36: 1RSIGN9U

Squares and roots of 138861349842

• 138861349842 squared (138861349842²) is 19282474479942313424964
• 138861349842 cubed (138861349842³) is 2677590434578706596482739220255688
• The square root of 138861349842 is 372641.0469097571
• The cube root of 138861349842 is 5178.3785397447

Scales and comparisons

• 138,861,349,842 seconds is equal to 4,415 years, 18 weeks, 5 days, 13 hours, 10 minutes, 42 seconds.
• To count from 1 to 138,861,349,842 would take you about eight thousand, eight hundred thirty 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 138861349842 cubic inches would be around 431.5 feet tall.

Recreational maths with 138861349842

• 138861349842 backwards is 248943168831
• The number of decimal digits it has is: 12
• The sum of 138861349842's digits is 57
• More coming soon!