18989358746

Names of 18989358746

• Cardinal: 18989358746 can be written as Eighteen billion, nine hundred eighty-nine million, three hundred fifty-eight thousand, seven hundred forty-six.

Scientific notation

• Scientific notation: 1.8989358746 × 10¹⁰

Factors of 18989358746

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1983

Divisors of 18989358746

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 19 29 38 58 73 137 146 274 551 1102 1387 1723 2117 2603 2774 3446 3973 4234 5206 7946 10001 20002 32737 40223 49967 65474 75487 80446 99934 125779 150974 190019 236051 251558 290029 380038 472102 580058 949373 1898746 2389801 3647591 4484969 4779602 5510551 6845479 7295182 8969938 11021102 13690958 17231723 34463446 69304229 130064101 138608458 260128202 327402737 499719967 654805474 999439934 9494679373 18989358746
• Sum of all divisors σ(n): 31689878400
• Sum of proper divisors (its aliquot sum) s(n): 12700519654
• 18989358746 is a deficient number, because the sum of its proper divisors (12700519654) is less than itself. Its deficiency is 6288839092

Bases of 18989358746

• Binary: 10001101011110110101001111010011010₂
• Hexadecimal: 0x46BDA9E9A
• Base-36: 8Q1RUZE

Squares and roots of 18989358746

• 18989358746 squared (18989358746²) is 360595745584286692516
• 18989358746 cubed (18989358746³) is 6847481975181365384700117344936
• The square root of 18989358746 is 137801.8822295253
• The cube root of 18989358746 is 2667.9033953461

Scales and comparisons

• 18,989,358,746 seconds is equal to 603 years, 41 weeks, 5 days, 5 hours, 52 minutes, 26 seconds.
• To count from 1 to 18,989,358,746 would take you about one thousand, two hundred 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 18989358746 cubic inches would be around 222.3 feet tall.

Recreational maths with 18989358746

• 18989358746 backwards is 64785398981
• The number of decimal digits it has is: 11
• The sum of 18989358746's digits is 68
• More coming soon!