1218940718

Names of 1218940718

• Cardinal: 1218940718 can be written as One billion, two hundred eighteen million, nine hundred forty thousand, seven hundred eighteen.

Scientific notation

• Scientific notation: 1.218940718 × 10⁹

Factors of 1218940718

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 5611

Divisors of 1218940718

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 113 226 1279 2558 4217 8434 144527 289054 476521 953042 5393543 10787086 609470359 1218940718
• Sum of all divisors σ(n): 1846471680
• Sum of proper divisors (its aliquot sum) s(n): 627530962
• 1218940718 is a deficient number, because the sum of its proper divisors (627530962) is less than itself. Its deficiency is 591409756

Bases of 1218940718

• Binary: 1001000101001111000111100101110₂
• Hexadecimal: 0x48A78F2E
• Base-36: K5Q4OE

Squares and roots of 1218940718

• 1218940718 squared (1218940718²) is 1485816473998355524
• 1218940718 cubed (1218940718³) is 1811122199631783813243826232
• The square root of 1218940718 is 34913.3315225001
• The cube root of 1218940718 is 1068.2203853247

Scales and comparisons

• 1,218,940,718 seconds is equal to 38 years, 39 weeks, 3 days, 2 hours, 38 minutes, 38 seconds.
• To count from 1 to 1,218,940,718 would take you about seventy-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 1218940718 cubic inches would be around 89 feet tall.

Recreational maths with 1218940718

• 1218940718 backwards is 8170498121
• The number of decimal digits it has is: 10
• The sum of 1218940718's digits is 41
• More coming soon!