1218431904

Names of 1218431904

• Cardinal: 1218431904 can be written as One billion, two hundred eighteen million, four hundred thirty-one thousand, nine hundred four.

Scientific notation

• Scientific notation: 1.218431904 × 10⁹

Factors of 1218431904

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 242

Divisors of 1218431904

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 37 48 73 74 96 111 127 146 148 219 222 254 292 296 381 438 444 508 584 592 762 876 888 1016 1168 1184 1369 1524 1752 1776 2032 2336 2701 2738 3048 3504 3552 4064 4107 4699 5402 5476 6096 7008 8103 8214 9271 9398 10804 10952 12192 14097 16206 16428 18542 18796 21608 21904 27813 28194 32412 32856 37084 37592 43216 43808 55626 56388 64824 65712 74168 75184 86432 99937 111252 112776 129648 131424 148336 150368 173863 199874 222504 225552 259296 296672 299811 343027 347726 399748 445008 451104 521589 599622 686054 695452 799496 890016 1029081 1043178 1199244 1372108 1390904 1598992 2058162 2086356 2398488 2744216 2781808 3197984 4116324 4172712 4796976 5488432 5563616 8232648 8345424 9593952 10976864 12691999 16465296 16690848 25383998 32930592 38075997 50767996 76151994 101535992 152303988 203071984 304607976 406143968 609215952 1218431904
• Sum of all divisors σ(n): 3358430208
• Sum of proper divisors (its aliquot sum) s(n): 2139998304
• 1218431904 is an abundant number, because the sum of its proper divisors (2139998304) is greater than itself. Its abundance is 921566400

Bases of 1218431904

• Binary: 1001000100111111100101110100000₂
• Hexadecimal: 0x489FCBA0
• Base-36: K5F82O

Squares and roots of 1218431904

• 1218431904 squared (1218431904²) is 1484576304685065216
• 1218431904 cubed (1218431904³) is 1808855133550708131495051264
• The square root of 1218431904 is 34906.0439465717
• The cube root of 1218431904 is 1068.0717313545

Scales and comparisons

• 1,218,431,904 seconds is equal to 38 years, 38 weeks, 4 days, 5 hours, 18 minutes, 24 seconds.
• To count from 1 to 1,218,431,904 would take you about seventy-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 1218431904 cubic inches would be around 89 feet tall.

Recreational maths with 1218431904

• 1218431904 backwards is 4091348121
• The number of decimal digits it has is: 10
• The sum of 1218431904's digits is 33
• More coming soon!