638487431049

Names of 638487431049

• Cardinal: 638487431049 can be written as Six hundred thirty-eight billion, four hundred eighty-seven million, four hundred thirty-one thousand and forty-nine.

Scientific notation

• Scientific notation: 6.38487431049 × 10¹¹

Factors of 638487431049

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 3118

Divisors of 638487431049

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 13 39 71 127 213 381 911 923 1651 1993 2733 2769 4953 5979 9017 11843 25909 27051 35529 64681 77727 115697 117221 141503 194043 253111 347091 351663 424509 759333 840853 1504061 1815623 1839539 2522559 3290443 4512183 5446869 5518617 8214487 9871329 17970881 23603099 24643461 53912643 70809297 106788331 128909233 230584121 233621453 320364993 386727699 691752363 700864359 1675820029 2997593573 5027460087 8992780719 16371472591 49114417773 212829143683 638487431049
• Sum of all divisors σ(n): 938535026688
• Sum of proper divisors (its aliquot sum) s(n): 300047595639
• 638487431049 is a deficient number, because the sum of its proper divisors (300047595639) is less than itself. Its deficiency is 338439835410

Bases of 638487431049

• Binary: 1001010010101000110100010000011110001001₂
• Hexadecimal: 0x94A8D10789
• Base-36: 85BEXITL

Squares and roots of 638487431049

• 638487431049 squared (638487431049²) is 407666199607551529240401
• 638487431049 cubed (638487431049³) is 260289744512934427885595040832610649
• The square root of 638487431049 is 799054.0851838503
• The cube root of 638487431049 is 8610.9443817703

Scales and comparisons

• 638,487,431,049 seconds is equal to 20,301 years, 48 weeks, 19 hours, 44 minutes, 9 seconds.
• To count from 1 to 638,487,431,049 would take you about forty thousand, six hundred 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 638487431049 cubic inches would be around 717.6 feet tall.

Recreational maths with 638487431049

• 638487431049 backwards is 940134784836
• The number of decimal digits it has is: 12
• The sum of 638487431049's digits is 57
• More coming soon!