18988125642

Names of 18988125642

• Cardinal: 18988125642 can be written as Eighteen billion, nine hundred eighty-eight million, one hundred twenty-five thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 1.8988125642 × 10¹⁰

Factors of 18988125642

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1625

Divisors of 18988125642

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 9 18 31 59 62 93 118 177 186 279 354 531 558 673 857 1062 1346 1714 1829 2019 2571 3658 4038 5142 5487 6057 7713 10974 12114 15426 16461 20863 26567 32922 39707 41726 50563 53134 62589 79414 79701 101126 119121 125178 151689 159402 187767 238242 239103 303378 357363 375534 455067 478206 576761 714726 910134 1153522 1230917 1567453 1730283 2461834 3134906 3460566 3692751 4702359 5190849 7385502 9404718 10381698 11078253 14107077 17879591 22156506 28214154 34028899 35759182 53638773 68057798 102086697 107277546 160916319 204173394 306260091 321832638 612520182 1054895869 2109791738 3164687607 6329375214 9494062821 18988125642
• Sum of all divisors σ(n): 43302504960
• Sum of proper divisors (its aliquot sum) s(n): 24314379318
• 18988125642 is an abundant number, because the sum of its proper divisors (24314379318) is greater than itself. Its abundance is 5326253676

Bases of 18988125642

• Binary: 10001101011110001111100110111001010₂
• Hexadecimal: 0x46BC7CDCA
• Base-36: 8Q11FII

Squares and roots of 18988125642

• 18988125642 squared (18988125642²) is 360548915396377912164
• 18988125642 cubed (18988125642³) is 6846148105633252027883672109288
• The square root of 18988125642 is 137797.4079654621
• The cube root of 18988125642 is 2667.8456459227

Scales and comparisons

• 18,988,125,642 seconds is equal to 603 years, 39 weeks, 4 days, 23 hours, 20 minutes, 42 seconds.
• To count from 1 to 18,988,125,642 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 18988125642 cubic inches would be around 222.3 feet tall.

Recreational maths with 18988125642

• 18988125642 backwards is 24652188981
• The number of decimal digits it has is: 11
• The sum of 18988125642's digits is 54
• More coming soon!