138901679990

Names of 138901679990

• Cardinal: 138901679990 can be written as One hundred thirty-eight billion, nine hundred one million, six hundred seventy-nine thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.3890167999 × 10¹¹

Factors of 138901679990

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 275

Divisors of 138901679990

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 5 10 71 142 197 355 394 710 985 1970 5041 10082 13987 25205 27974 38809 50410 69935 77618 139870 194045 357911 388090 715822 993077 1789555 1986154 2755439 3579110 4965385 5510878 9930770 13777195 27554390 70508467 141016934 195636169 352542335 391272338 705084670 978180845 1956361690 13890167999 27780335998 69450839995 138901679990
• Sum of all divisors σ(n): 254888589024
• Sum of proper divisors (its aliquot sum) s(n): 115986909034
• 138901679990 is a deficient number, because the sum of its proper divisors (115986909034) is less than itself. Its deficiency is 22914770956

Bases of 138901679990

• Binary: 10000001010111001011110110111101110110₂
• Hexadecimal: 0x20572F6F76
• Base-36: 1RT6H27Q

Squares and roots of 138901679990

• 138901679990 squared (138901679990²) is 19293676704044366400100
• 138901679990 cubed (138901679990³) is 2679924107375688520468998503999000
• The square root of 138901679990 is 372695.1569178221
• The cube root of 138901679990 is 5178.8798180769

Scales and comparisons

• 138,901,679,990 seconds is equal to 4,416 years, 33 weeks, 3 days, 7 hours, 59 minutes, 50 seconds.
• To count from 1 to 138,901,679,990 would take you about eight thousand, eight hundred thirty-three 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 138901679990 cubic inches would be around 431.6 feet tall.

Recreational maths with 138901679990

• 138901679990 backwards is 099976109831
• The number of decimal digits it has is: 12
• The sum of 138901679990's digits is 62
• More coming soon!