638420132349

Names of 638420132349

• Cardinal: 638420132349 can be written as Six hundred thirty-eight billion, four hundred twenty million, one hundred thirty-two thousand, three hundred forty-nine.

Scientific notation

• Scientific notation: 6.38420132349 × 10¹¹

Factors of 638420132349

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 485

Divisors of 638420132349

• Number of divisors d(n): 66
• Complete list of divisors:
  1 3 9 27 61 81 183 243 421 549 729 1263 1647 2187 3789 4941 6561 11367 14823 19683 25681 34101 44469 59049 77043 102303 133407 177241 231129 306909 400221 531723 693387 920727 1200663 1595169 2080161 2762181 3601989 4785507 6240483 8286543 10811701 14356521 18721449 24859629 32435103 43069563 56164347 97305309 129208689 168493041 291915927 387626067 505479123 875747781 1162878201 1516437369 2627243343 3488634603 7881730029 10465903809 23645190087 70935570261 212806710783 638420132349
• Sum of all divisors σ(n): 975640983738
• Sum of proper divisors (its aliquot sum) s(n): 337220851389
• 638420132349 is a deficient number, because the sum of its proper divisors (337220851389) is less than itself. Its deficiency is 301199280960

Bases of 638420132349

• Binary: 1001010010100100110011100010000111111101₂
• Hexadecimal: 0x94A4CE21FD
• Base-36: 85AAV2T9

Squares and roots of 638420132349

• 638420132349 squared (638420132349²) is 407580265388514676257801
• 638420132349 cubed (638420132349³) is 260207446972176083521034202463704549
• The square root of 638420132349 is 799011.9725942785
• The cube root of 638420132349 is 8610.6418304089

Scales and comparisons

• 638,420,132,349 seconds is equal to 20,299 years, 40 weeks, 5 days, 21 hours, 39 minutes, 9 seconds.
• To count from 1 to 638,420,132,349 would take you about forty thousand, five hundred ninety-nine 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 638420132349 cubic inches would be around 717.6 feet tall.

Recreational maths with 638420132349

• 638420132349 backwards is 943231024836
• The number of decimal digits it has is: 12
• The sum of 638420132349's digits is 45
• More coming soon!