18838181408

Names of 18838181408

• Cardinal: 18838181408 can be written as Eighteen billion, eight hundred thirty-eight million, one hundred eighty-one thousand, four hundred eight.

Scientific notation

• Scientific notation: 1.8838181408 × 10¹⁰

Factors of 18838181408

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1298

Divisors of 18838181408

• Number of divisors d(n): 54
• Complete list of divisors:
  1 2 4 8 16 19 32 38 76 152 304 361 608 722 1277 1444 2554 2888 5108 5776 10216 11552 20432 24263 40864 48526 97052 194104 388208 460997 776416 921994 1630729 1843988 3261458 3687976 6522916 7375952 13045832 14751904 26091664 30983851 52183328 61967702 123935404 247870808 495741616 588693169 991483232 1177386338 2354772676 4709545352 9419090704 18838181408
• Sum of all divisors σ(n): 39173064021
• Sum of proper divisors (its aliquot sum) s(n): 20334882613
• 18838181408 is an abundant number, because the sum of its proper divisors (20334882613) is greater than itself. Its abundance is 1496701205

Bases of 18838181408

• Binary: 10001100010110101111101011000100000₂
• Hexadecimal: 0x462D7D620
• Base-36: 8NJRLSW

Squares and roots of 18838181408

• 18838181408 squared (18838181408²) is 354877078760716862464
• 18838181408 cubed (18838181408³) is 6685238787235488079221417869312
• The square root of 18838181408 is 137252.2546554337
• The cube root of 18838181408 is 2660.8046545251

Scales and comparisons

• 18,838,181,408 seconds is equal to 598 years, 51 weeks, 5 days, 12 hours, 10 minutes, 8 seconds.
• To count from 1 to 18,838,181,408 would take you about one thousand, one hundred ninety-seven 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 18838181408 cubic inches would be around 221.7 feet tall.

Recreational maths with 18838181408

• 18838181408 backwards is 80418183881
• The number of decimal digits it has is: 11
• The sum of 18838181408's digits is 50
• More coming soon!