138678876693

Names of 138678876693

• Cardinal: 138678876693 can be written as One hundred thirty-eight billion, six hundred seventy-eight million, eight hundred seventy-six thousand, six hundred ninety-three.

Scientific notation

• Scientific notation: 1.38678876693 × 10¹¹

Factors of 138678876693

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 156

Divisors of 138678876693

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 7 9 19 21 49 57 63 127 133 147 171 361 381 399 441 889 931 1083 1143 1197 2413 2527 2667 2793 3249 6223 6859 7239 7581 8001 8379 16891 17689 18669 20577 21717 22743 45847 48013 50673 53067 56007 61731 118237 130321 137541 144039 152019 159201 320929 336091 354711 390963 412623 432117 871093 912247 962787 1008273 1064133 1172889 2246503 2476099 2613279 2736741 2888361 3024819 6097651 6385729 6739509 7428297 7839837 8210223 16550767 17332693 18292953 19157187 20218527 22284891 42683557 49652301 51998079 54878859 57471561 115855369 121328851 128050671 148956903 155994237 314464573 347566107 363986553 384152013 810987583 943393719 1042698321 1091959659 2201252011 2432962749 2830181157 6603756033 7298888247 15408764077 19811268099 46226292231 138678876693
• Sum of all divisors σ(n): 247900423680
• Sum of proper divisors (its aliquot sum) s(n): 109221546987
• 138678876693 is a deficient number, because the sum of its proper divisors (109221546987) is less than itself. Its deficiency is 29457329706

Bases of 138678876693

• Binary: 10000001001001111001111011101000010101₂
• Hexadecimal: 0x2049E7BA15
• Base-36: 1RPHTM39

Squares and roots of 138678876693

• 138678876693 squared (138678876693²) is 19231830840832298616249
• 138678876693 cubed (138678876693³) is 2667048697756416849294549597184557
• The square root of 138678876693 is 372396.1287298781
• The cube root of 138678876693 is 5176.1092996325

Scales and comparisons

• 138,678,876,693 seconds is equal to 4,409 years, 29 weeks, 14 hours, 11 minutes, 33 seconds.
• To count from 1 to 138,678,876,693 would take you about eight thousand, eight hundred nineteen 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 138678876693 cubic inches would be around 431.3 feet tall.

Recreational maths with 138678876693

• 138678876693 backwards is 396678876831
• The number of decimal digits it has is: 12
• The sum of 138678876693's digits is 72
• More coming soon!