18749740491

Names of 18749740491

• Cardinal: 18749740491 can be written as Eighteen billion, seven hundred forty-nine million, seven hundred forty thousand, four hundred ninety-one.

Scientific notation

• Scientific notation: 1.8749740491 × 10¹⁰

Factors of 18749740491

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 220

Divisors of 18749740491

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 9 27 37 67 111 113 201 333 339 603 999 1017 1369 1809 2479 3051 4107 4181 4489 7437 7571 12321 12543 13467 22311 22713 36963 37629 40401 66933 68139 91723 112887 121203 154697 166093 204417 275169 280127 464091 498279 507257 825507 840381 1392273 1494837 1521771 2476521 2521143 4176819 4484511 4565313 6145441 7563429 10364699 13695939 18436323 18768509 31094097 55308969 56305527 93282291 165926907 168916581 279846873 506749743 694434833 2083304499 6249913497 18749740491
• Sum of all divisors σ(n): 29237347440
• Sum of proper divisors (its aliquot sum) s(n): 10487606949
• 18749740491 is a deficient number, because the sum of its proper divisors (10487606949) is less than itself. Its deficiency is 8262133542

Bases of 18749740491

• Binary: 10001011101100100100101010111001011₂
• Hexadecimal: 0x45D9255CB
• Base-36: 8M340CR

Squares and roots of 18749740491

• 18749740491 squared (18749740491²) is 351552768479844921081
• 18749740491 cubed (18749740491³) is 6591523177889696834193125190771
• The square root of 18749740491 is 136929.6917801249
• The cube root of 18749740491 is 2656.6341664795

Scales and comparisons

• 18,749,740,491 seconds is equal to 596 years, 9 weeks, 3 days, 21 hours, 14 minutes, 51 seconds.
• To count from 1 to 18,749,740,491 would take you about one thousand, one hundred ninety-two 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 18749740491 cubic inches would be around 221.4 feet tall.

Recreational maths with 18749740491

• 18749740491 backwards is 19404794781
• The number of decimal digits it has is: 11
• The sum of 18749740491's digits is 54
• More coming soon!