18021323993409

Names of 18021323993409

• Cardinal: 18021323993409 can be written as Eighteen trillion, twenty-one billion, three hundred twenty-three million, nine hundred ninety-three thousand, four hundred nine.

Scientific notation

• Scientific notation: 1.8021323993409 × 10¹³

Factors of 18021323993409

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 864

Divisors of 18021323993409

• Number of divisors d(n): 81
• Complete list of divisors:
  1 3 9 11 33 99 121 197 363 591 653 1089 1773 1959 2167 5877 6501 7183 19503 21549 23837 38809 64647 71511 79013 116427 128641 214533 237039 349281 385923 426409 426899 711117 1157769 1279227 1280697 1415051 3837681 3842091 4245153 4690499 4695889 12735459 14071497 14087667 15565561 25342277 42214491 42263001 46696683 51595489 76026831 84002573 140090049 154786467 228080493 252007719 278765047 464359401 756023157 836295141 924028303 2508885423 2772084909 3066415517 8316254727 9199246551 10164311333 16548506881 27597739653 30492933999 49645520643 91478801997 148936561929 182033575691 546100727073 1638302181219 2002369332601 6007107997803 18021323993409
• Sum of all divisors σ(n): 28802453896489
• Sum of proper divisors (its aliquot sum) s(n): 10781129903080
• 18021323993409 is a deficient number, because the sum of its proper divisors (10781129903080) is less than itself. Its deficiency is 7240194090329

Bases of 18021323993409

• Binary: 100000110001111101010100111010111000101000001₂
• Hexadecimal: 0x1063EA9D7141
• Base-36: 6DYVR0BI9

Squares and roots of 18021323993409

• 18021323993409 squared (18021323993409²) is 324768118475418907075441281
• 18021323993409 cubed (18021323993409³) is 5852751485775363491260933751341810516929
• 18021323993409 is a perfect square number. Its square root is 4245153
• The cube root of 18021323993409 is 26217.7588714409

Scales and comparisons

• 18,021,323,993,409 seconds is equal to 573,022 years, 18 weeks, 4 days, 19 hours, 30 minutes, 9 seconds.
• To count from 1 to 18,021,323,993,409 would take you about one million, four hundred thirty-two thousand, five hundred fifty-five 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 18021323993409 cubic inches would be around 2184.8 feet tall.

Recreational maths with 18021323993409

• 18021323993409 backwards is 90439932312081
• The number of decimal digits it has is: 14
• The sum of 18021323993409's digits is 54
• More coming soon!