16943784921

Names of 16943784921

• Cardinal: 16943784921 can be written as Sixteen billion, nine hundred forty-three million, seven hundred eighty-four thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 1.6943784921 × 10¹⁰

Factors of 16943784921

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 12641

Divisors of 16943784921

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 21 37 49 63 83 111 147 249 259 333 441 581 747 777 1743 1813 2331 3071 4067 5229 5439 9213 12201 12511 16317 21497 27639 36603 37533 64491 87577 112599 150479 193473 262731 451437 462907 613039 788193 1038413 1354311 1388721 1839117 3115239 3240349 4166163 5517351 7268891 9345717 9721047 21806673 22682443 29163141 38421281 50882237 65420019 68047329 115263843 152646711 204141987 268948967 345791529 457940133 806846901 1882642769 2420540703 5647928307 16943784921
• Sum of all divisors σ(n): 29594283264
• Sum of proper divisors (its aliquot sum) s(n): 12650498343
• 16943784921 is a deficient number, because the sum of its proper divisors (12650498343) is less than itself. Its deficiency is 4293286578

Bases of 16943784921

• Binary: 1111110001111011011010001111011001₂
• Hexadecimal: 0x3F1EDA3D9
• Base-36: 7S7W449

Squares and roots of 16943784921

• 16943784921 squared (16943784921²) is 287091847449106976241
• 16943784921 cubed (16943784921³) is 4864422515750211098948161061961
• The square root of 16943784921 is 130168.2946074043
• The cube root of 16943784921 is 2568.4442491577

Scales and comparisons

• 16,943,784,921 seconds is equal to 538 years, 39 weeks, 3 days, 14 hours, 55 minutes, 21 seconds.
• To count from 1 to 16,943,784,921 would take you about one thousand and 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 16943784921 cubic inches would be around 214 feet tall.

Recreational maths with 16943784921

• 16943784921 backwards is 12948734961
• The number of decimal digits it has is: 11
• The sum of 16943784921's digits is 54
• More coming soon!