18638424432

Names of 18638424432

• Cardinal: 18638424432 can be written as Eighteen billion, six hundred thirty-eight million, four hundred twenty-four thousand, four hundred thirty-two.

Scientific notation

• Scientific notation: 1.8638424432 × 10¹⁰

Factors of 18638424432

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 102907

Divisors of 18638424432

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 421 432 842 1263 1684 2526 3368 3789 5052 6736 7578 10104 11367 15156 20208 22734 30312 45468 60624 90936 102481 181872 204962 307443 409924 614886 819848 922329 1229772 1639696 1844658 2459544 2766987 3689316 4919088 5533974 7378632 11067948 14757264 22135896 43144501 44271792 86289002 129433503 172578004 258867006 345156008 388300509 517734012 690312016 776601018 1035468024 1164901527 1553202036 2070936048 2329803054 3106404072 4659606108 6212808144 9319212216 18638424432
• Sum of all divisors σ(n): 53626780960
• Sum of proper divisors (its aliquot sum) s(n): 34988356528
• 18638424432 is an abundant number, because the sum of its proper divisors (34988356528) is greater than itself. Its abundance is 16349932096

Bases of 18638424432

• Binary: 10001010110111011111100100101110000₂
• Hexadecimal: 0x456EFC970
• Base-36: 8K8U4C0

Squares and roots of 18638424432

• 18638424432 squared (18638424432²) is 347390865307374522624
• 18638424432 cubed (18638424432³) is 6474818391398590492249498349568
• The square root of 18638424432 is 136522.6150936173
• The cube root of 18638424432 is 2651.3663030031

Scales and comparisons

• 18,638,424,432 seconds is equal to 592 years, 33 weeks, 3 days, 12 hours, 7 minutes, 12 seconds.
• To count from 1 to 18,638,424,432 would take you about one thousand, one hundred eighty-five 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 18638424432 cubic inches would be around 220.9 feet tall.

Recreational maths with 18638424432

• 18638424432 backwards is 23442483681
• The number of decimal digits it has is: 11
• The sum of 18638424432's digits is 45
• More coming soon!