18289485972

Names of 18289485972

• Cardinal: 18289485972 can be written as Eighteen billion, two hundred eighty-nine million, four hundred eighty-five thousand, nine hundred seventy-two.

Scientific notation

• Scientific notation: 1.8289485972 × 10¹⁰

Factors of 18289485972

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 200740

Divisors of 18289485972

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 9 12 17 18 34 36 51 68 102 149 153 204 298 306 447 596 612 894 1341 1788 2533 2682 5066 5364 7599 10132 15198 22797 30396 45594 91188 200569 401138 601707 802276 1203414 1805121 2406828 3409673 3610242 6819346 7220484 10229019 13638692 20458038 29884781 30687057 40916076 59769562 61374114 89654343 119539124 122748228 179308686 268963029 358617372 508041277 537926058 1016082554 1075852116 1524123831 2032165108 3048247662 4572371493 6096495324 9144742986 18289485972
• Sum of all divisors σ(n): 49280049000
• Sum of proper divisors (its aliquot sum) s(n): 30990563028
• 18289485972 is an abundant number, because the sum of its proper divisors (30990563028) is greater than itself. Its abundance is 12701077056

Bases of 18289485972

• Binary: 10001000010001000110110100010010100₂
• Hexadecimal: 0x442236894
• Base-36: 8EH35P0

Squares and roots of 18289485972

• 18289485972 squared (18289485972²) is 334505297119984784784
• 18289485972 cubed (18289485972³) is 6117929939235653722160407050048
• The square root of 18289485972 is 135238.6260356115
• The cube root of 18289485972 is 2634.7161482405

Scales and comparisons

• 18,289,485,972 seconds is equal to 581 years, 28 weeks, 3 days, 20 hours, 46 minutes, 12 seconds.
• To count from 1 to 18,289,485,972 would take you about one thousand, one hundred sixty-three 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 18289485972 cubic inches would be around 219.6 feet tall.

Recreational maths with 18289485972

• 18289485972 backwards is 27958498281
• The number of decimal digits it has is: 11
• The sum of 18289485972's digits is 63
• More coming soon!