138913722868

Names of 138913722868

• Cardinal: 138913722868 can be written as One hundred thirty-eight billion, nine hundred thirteen million, seven hundred twenty-two thousand, eight hundred sixty-eight.

Scientific notation

• Scientific notation: 1.38913722868 × 10¹¹

Factors of 138913722868

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 11366

Divisors of 138913722868

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 19 38 71 76 142 284 1349 2698 3181 5396 6362 8093 12724 16186 32372 60439 120878 153767 225851 241756 307534 451702 574603 615068 903404 1149206 2298412 4291169 8582338 10917457 17164676 21834914 25743833 43669828 51487666 102975332 489132827 978265654 1827812143 1956531308 3655624286 7311248572 34728430717 69456861434 138913722868
• Sum of all divisors σ(n): 259611488640
• Sum of proper divisors (its aliquot sum) s(n): 120697765772
• 138913722868 is a deficient number, because the sum of its proper divisors (120697765772) is less than itself. Its deficiency is 18215957096

Bases of 138913722868

• Binary: 10000001010111111001110011000111110100₂
• Hexadecimal: 0x2057E731F4
• Base-36: 1RTDN6K4

Squares and roots of 138913722868

• 138913722868 squared (138913722868²) is 19297022401047506145424
• 138913722868 cubed (138913722868³) is 2680621221996701221587956442356032
• The square root of 138913722868 is 372711.3130399989
• The cube root of 138913722868 is 5179.0294846501

Scales and comparisons

• 138,913,722,868 seconds is equal to 4,417 years, 1 week, 2 days, 17 hours, 14 minutes, 28 seconds.
• To count from 1 to 138,913,722,868 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 138913722868 cubic inches would be around 431.6 feet tall.

Recreational maths with 138913722868

• 138913722868 backwards is 868227319831
• The number of decimal digits it has is: 12
• The sum of 138913722868's digits is 58
• More coming soon!