21018980318

Names of 21018980318

• Cardinal: 21018980318 can be written as Twenty-one billion, eighteen million, nine hundred eighty thousand, three hundred eighteen.

Scientific notation

• Scientific notation: 2.1018980318 × 10¹⁰

Factors of 21018980318

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 393

Divisors of 21018980318

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 7 14 19 38 49 79 98 133 137 149 158 266 274 298 343 553 686 931 959 1043 1106 1501 1862 1918 2086 2603 2831 3002 3871 5206 5662 6517 6713 7301 7742 10507 10823 11771 13034 13426 14602 18221 19817 20413 21014 21646 23542 27097 36442 39634 40826 46991 51107 54194 73549 75761 82397 93982 102214 127547 138719 142891 147098 151522 164794 205637 223649 255094 277438 285782 387847 411274 447298 514843 530327 576779 775694 892829 971033 1000237 1029686 1060654 1153558 1439459 1565543 1612627 1785658 1942066 2000474 2714929 2878918 3131086 3225254 3712289 4037453 5429858 7001659 7424578 8074906 10076213 10958801 11288389 14003318 19004503 20152426 21917602 22576778 30639913 38009006 61279826 70533491 76711607 79018723 133031521 141066982 153423214 158037446 214479391 266063042 428958782 553131061 1106262122 1501355737 3002711474 10509490159 21018980318
• Sum of all divisors σ(n): 39744000000
• Sum of proper divisors (its aliquot sum) s(n): 18725019682
• 21018980318 is a deficient number, because the sum of its proper divisors (18725019682) is less than itself. Its deficiency is 2293960636

Bases of 21018980318

• Binary: 10011100100110101000010111111011110₂
• Hexadecimal: 0x4E4D42FDE
• Base-36: 9NM5P0E

Squares and roots of 21018980318

• 21018980318 squared (21018980318²) is 441797533608471381124
• 21018980318 cubed (21018980318³) is 9286133663457403477911632717432
• The square root of 21018980318 is 144979.2409898741
• The cube root of 21018980318 is 2759.7551206635

Scales and comparisons

• 21,018,980,318 seconds is equal to 668 years, 17 weeks, 4 days, 5 hours, 38 minutes, 38 seconds.
• To count from 1 to 21,018,980,318 would take you about one thousand, three hundred thirty-six 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 21018980318 cubic inches would be around 230 feet tall.

Recreational maths with 21018980318

• 21018980318 backwards is 81308981012
• The number of decimal digits it has is: 11
• The sum of 21018980318's digits is 41
• More coming soon!