18443456388

Names of 18443456388

• Cardinal: 18443456388 can be written as Eighteen billion, four hundred forty-three million, four hundred fifty-six thousand, three hundred eighty-eight.

Scientific notation

• Scientific notation: 1.8443456388 × 10¹⁰

Factors of 18443456388

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 21788

Divisors of 18443456388

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 252 4153 8306 12459 16612 17623 24918 29071 35246 37377 49836 52869 58142 70492 74754 87213 105738 116284 123361 149508 158607 174426 211476 246722 261639 317214 348852 370083 493444 523278 634428 740166 1046556 1110249 1480332 2220498 4440996 73188319 146376638 219564957 292753276 439129914 512318233 658694871 878259828 1024636466 1317389742 1536954699 2049272932 2634779484 3073909398 4610864097 6147818796 9221728194 18443456388
• Sum of all divisors σ(n): 53296949888
• Sum of proper divisors (its aliquot sum) s(n): 34853493500
• 18443456388 is an abundant number, because the sum of its proper divisors (34853493500) is greater than itself. Its abundance is 16410037112

Bases of 18443456388

• Binary: 10001001011010100001100111110000100₂
• Hexadecimal: 0x44B50CF84
• Base-36: 8H0RA10

Squares and roots of 18443456388

• 18443456388 squared (18443456388²) is 340161083536058006544
• 18443456388 cubed (18443456388³) is 6273746109092110669132482603072
• The square root of 18443456388 is 135806.6875672917
• The cube root of 18443456388 is 2642.0889681705

Scales and comparisons

• 18,443,456,388 seconds is equal to 586 years, 23 weeks, 22 hours, 19 minutes, 48 seconds.
• To count from 1 to 18,443,456,388 would take you about one thousand, one hundred seventy-two 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 18443456388 cubic inches would be around 220.2 feet tall.

Recreational maths with 18443456388

• 18443456388 backwards is 88365434481
• The number of decimal digits it has is: 11
• The sum of 18443456388's digits is 54
• More coming soon!