18988994136

Names of 18988994136

• Cardinal: 18988994136 can be written as Eighteen billion, nine hundred eighty-eight million, nine hundred ninety-four thousand, one hundred thirty-six.

Scientific notation

• Scientific notation: 1.8988994136 × 10¹⁰

Factors of 18988994136

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 8377

Divisors of 18988994136

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 19 21 24 28 38 42 56 57 76 84 114 133 152 168 228 266 399 456 532 787 798 1064 1574 1596 2361 3148 3192 4722 5509 6296 7559 9444 11018 14953 15118 16527 18888 22036 22677 29906 30236 33054 44072 44859 45354 52913 59812 60472 66108 89718 90708 104671 105826 119624 132216 143621 158739 179436 181416 209342 211652 287242 314013 317478 358872 418684 423304 430863 574484 628026 634956 837368 861726 1005347 1148968 1256052 1269912 1723452 2010694 2512104 3016041 3446904 4021388 5948933 6032082 8042776 11897866 12064164 17846799 23795732 24128328 35693598 41642531 47591464 71387196 83285062 113029727 124927593 142774392 166570124 226059454 249855186 333140248 339089181 452118908 499710372 678178362 791208089 904237816 999420744 1356356724 1582416178 2373624267 2712713448 3164832356 4747248534 6329664712 9494497068 18988994136
• Sum of all divisors σ(n): 57189888000
• Sum of proper divisors (its aliquot sum) s(n): 38200893864
• 18988994136 is an abundant number, because the sum of its proper divisors (38200893864) is greater than itself. Its abundance is 19211899728

Bases of 18988994136

• Binary: 10001101011110101010000111001011000₂
• Hexadecimal: 0x46BD50E58
• Base-36: 8Q1K1NC

Squares and roots of 18988994136

• 18988994136 squared (18988994136²) is 360581898297042386496
• 18988994136 cubed (18988994136³) is 6847087552310286263315989587456
• The square root of 18988994136 is 137800.5592731757
• The cube root of 18988994136 is 2667.8863199849

Scales and comparisons

• 18,988,994,136 seconds is equal to 603 years, 41 weeks, 1 day, 35 minutes, 36 seconds.
• To count from 1 to 18,988,994,136 would take you about one thousand, two hundred 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 18988994136 cubic inches would be around 222.3 feet tall.

Recreational maths with 18988994136

• 18988994136 backwards is 63149988981
• The number of decimal digits it has is: 11
• The sum of 18988994136's digits is 66
• More coming soon!