138791479509

Names of 138791479509

• Cardinal: 138791479509 can be written as One hundred thirty-eight billion, seven hundred ninety-one million, four hundred seventy-nine thousand, five hundred nine.

Scientific notation

• Scientific notation: 1.38791479509 × 10¹¹

Factors of 138791479509

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 201569

Divisors of 138791479509

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 9 17 19 27 51 57 79 153 171 237 323 459 513 711 969 1343 1501 2133 2907 4029 4503 8721 12087 13509 25517 36261 40527 76551 201451 229653 604353 688959 1813059 3424667 3827569 5439177 10274001 11482707 15914629 30822003 34448121 47743887 65068673 92466009 103344363 143231661 195206019 270548693 302377951 429694983 585618057 811646079 907133853 1756854171 2434938237 2721401559 5140425167 7304814711 8164204677 15421275501 46263826503 138791479509
• Sum of all divisors σ(n): 232072704000
• Sum of proper divisors (its aliquot sum) s(n): 93281224491
• 138791479509 is a deficient number, because the sum of its proper divisors (93281224491) is less than itself. Its deficiency is 45510255018

Bases of 138791479509

• Binary: 10000001010000100111011110100011010101₂
• Hexadecimal: 0x20509DE8D5
• Base-36: 1RRCV2Z9

Squares and roots of 138791479509

• 138791479509 squared (138791479509²) is 19263074784297166881081
• 138791479509 cubed (138791479509³) is 2673550649205114832142307051269229
• The square root of 138791479509 is 372547.2849303831
• The cube root of 138791479509 is 5177.5098657407

Scales and comparisons

• 138,791,479,509 seconds is equal to 4,413 years, 7 weeks, 1 day, 20 hours, 45 minutes, 9 seconds.
• To count from 1 to 138,791,479,509 would take you about eight thousand, eight hundred twenty-six 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 138791479509 cubic inches would be around 431.5 feet tall.

Recreational maths with 138791479509

• 138791479509 backwards is 905974197831
• The number of decimal digits it has is: 12
• The sum of 138791479509's digits is 63
• More coming soon!