18212930538860421

Names of 18212930538860421

• Cardinal: 18212930538860421 can be written as Eighteen quadrillion, two hundred twelve trillion, nine hundred thirty billion, five hundred thirty-eight million, eight hundred sixty thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 1.8212930538860421 × 10¹⁶

Factors of 18212930538860421

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 12933879

Divisors of 18212930538860421

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 7 9 13 21 39 63 91 117 273 819 2041643 6124929 10892213 14291501 18374787 26541359 32676639 42874503 76245491 79624077 98029917 128623509 141598769 185789513 228736473 238872231 424796307 557368539 686209419 991191383 1274388921 1672105617 2973574149 8920722447 22238010425959 66714031277877 155666072981713 200142093833631 289094135537467 466998218945139 867282406612401 1400994656835417 2023658948762269 2601847219837203 6070976846286807 18212930538860421
• Sum of all divisors σ(n): 32378562011892096
• Sum of proper divisors (its aliquot sum) s(n): 14165631473031675
• 18212930538860421 is a deficient number, because the sum of its proper divisors (14165631473031675) is less than itself. Its deficiency is 4047299065828746

Bases of 18212930538860421

• Binary: 1000000101101001001000001010111000101100110111110000101₂
• Hexadecimal: 0x40B49057166F85
• Base-36: 4ZBY0S6WMF9

Squares and roots of 18212930538860421

• 18212930538860421 squared (18212930538860421²) is 331710838813354545257613320297241
• 18212930538860421 cubed (18212930538860421³) is 6041426466294751651186114049422296756709130398461
• The square root of 18212930538860421 is 134955290.8887251481
• The cube root of 18212930538860421 is 263103.4909052327

Scales and comparisons

• 18,212,930,538,860,421 seconds is equal to 579,114,854 years, 43 weeks, 5 days, 17 hours, 40 minutes, 21 seconds.
• To count from 1 to 18,212,930,538,860,421 would take you about one billion, seven hundred thirty-seven million, three hundred forty-four thousand, five hundred sixty-four 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 18212930538860421 cubic inches would be around 21925.3 feet tall.

Recreational maths with 18212930538860421

• 18212930538860421 backwards is 12406883503921281
• 18212930538860421 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 18212930538860421's digits is 63
• More coming soon!