18218149812

Names of 18218149812

• Cardinal: 18218149812 can be written as Eighteen billion, two hundred eighteen million, one hundred forty-nine thousand, eight hundred twelve.

Scientific notation

• Scientific notation: 1.8218149812 × 10¹⁰

Factors of 18218149812

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 17023

Divisors of 18218149812

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 9 12 18 31 36 62 93 124 186 279 372 558 961 1116 1922 2883 3844 5766 8649 11532 16987 17298 29791 33974 34596 50961 59582 67948 89373 101922 119164 152883 178746 203844 268119 305766 357492 526597 536238 611532 1053194 1072476 1579791 2106388 3159582 4739373 6319164 9478746 16324507 18957492 32649014 48973521 65298028 97947042 146920563 195894084 293841126 506059717 587682252 1012119434 1518179151 2024238868 3036358302 4554537453 6072716604 9109074906 18218149812
• Sum of all divisors σ(n): 47589231872
• Sum of proper divisors (its aliquot sum) s(n): 29371082060
• 18218149812 is an abundant number, because the sum of its proper divisors (29371082060) is greater than itself. Its abundance is 11152932248

Bases of 18218149812

• Binary: 10000111101111000101110011110110100₂
• Hexadecimal: 0x43DE2E7B4
• Base-36: 8DAM6D0

Squares and roots of 18218149812

• 18218149812 squared (18218149812²) is 331900982572475635344
• 18218149812 cubed (18218149812³) is 6046621823255362272416874155328
• The square root of 18218149812 is 134974.6265488443
• The cube root of 18218149812 is 2631.2862099669

Scales and comparisons

• 18,218,149,812 seconds is equal to 579 years, 14 weeks, 4 days, 5 hours, 10 minutes, 12 seconds.
• To count from 1 to 18,218,149,812 would take you about one thousand, one hundred fifty-eight 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 18218149812 cubic inches would be around 219.3 feet tall.

Recreational maths with 18218149812

• 18218149812 backwards is 21894181281
• The number of decimal digits it has is: 11
• The sum of 18218149812's digits is 45
• More coming soon!