18945080388

Names of 18945080388

• Cardinal: 18945080388 can be written as Eighteen billion, nine hundred forty-five million, eighty thousand, three hundred eighty-eight.

Scientific notation

• Scientific notation: 1.8945080388 × 10¹⁰

Factors of 18945080388

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 13493665

Divisors of 18945080388

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 108 117 156 234 351 468 702 1404 13493647 26987294 40480941 53974588 80961882 121442823 161923764 175417411 242885646 350834822 364328469 485771292 526252233 701669644 728656938 1052504466 1457313876 1578756699 2105008932 3157513398 4736270097 6315026796 9472540194 18945080388
• Sum of all divisors σ(n): 52895100160
• Sum of proper divisors (its aliquot sum) s(n): 33950019772
• 18945080388 is an abundant number, because the sum of its proper divisors (33950019772) is greater than itself. Its abundance is 15004939384

Bases of 18945080388

• Binary: 10001101001001101101111110001000100₂
• Hexadecimal: 0x46936FC44
• Base-36: 8PBETL0

Squares and roots of 18945080388

• 18945080388 squared (18945080388²) is 358916070907782230544
• 18945080388 cubed (18945080388³) is 6799693815893042492454028971072
• The square root of 18945080388 is 137641.1289840359
• The cube root of 18945080388 is 2665.8281573311

Scales and comparisons

• 18,945,080,388 seconds is equal to 602 years, 20 weeks, 3 days, 18 hours, 19 minutes, 48 seconds.
• To count from 1 to 18,945,080,388 would take you about one thousand, two hundred four 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 18945080388 cubic inches would be around 222.2 feet tall.

Recreational maths with 18945080388

• 18945080388 backwards is 88308054981
• 18945080388 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18945080388's digits is 54
• More coming soon!