18198431218

Names of 18198431218

• Cardinal: 18198431218 can be written as Eighteen billion, one hundred ninety-eight million, four hundred thirty-one thousand, two hundred eighteen.

Scientific notation

• Scientific notation: 1.8198431218 × 10¹⁰

Factors of 18198431218

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 789

Divisors of 18198431218

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 11 17 22 34 61 121 122 127 187 242 254 374 571 671 1037 1142 1342 1397 2057 2074 2159 2794 4114 4318 6281 7381 7747 9707 11407 12562 14762 15367 15494 19414 22814 23749 30734 34831 47498 69091 69662 72517 85217 106777 125477 131699 138182 145034 170434 213554 250954 261239 263398 383141 522478 592127 766282 797687 937387 1174547 1184254 1232789 1448689 1595374 1874774 2349094 2465578 2897378 4214551 4423537 6513397 8429102 8774557 8847074 13026794 13560679 15935579 17549114 27121358 31871158 48658907 71647367 75200129 97317814 143294734 149167469 150400258 298334938 535247977 827201419 1070495954 1654402838 9099215609 18198431218
• Sum of all divisors σ(n): 32601913344
• Sum of proper divisors (its aliquot sum) s(n): 14403482126
• 18198431218 is a deficient number, because the sum of its proper divisors (14403482126) is less than itself. Its deficiency is 3794949092

Bases of 18198431218

• Binary: 10000111100101101100000010111110010₂
• Hexadecimal: 0x43CB605F2
• Base-36: 8CYVJEA

Squares and roots of 18198431218

• 18198431218 squared (18198431218²) is 331182898796276963524
• 18198431218 cubed (18198431218³) is 6027009204321901315169408892232
• The square root of 18198431218 is 134901.5612140941
• The cube root of 18198431218 is 2630.3365344001

Scales and comparisons

• 18,198,431,218 seconds is equal to 578 years, 33 weeks, 6 days, 23 hours, 46 minutes, 58 seconds.
• To count from 1 to 18,198,431,218 would take you about one thousand, one hundred fifty-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 18198431218 cubic inches would be around 219.2 feet tall.

Recreational maths with 18198431218

• 18198431218 backwards is 81213489181
• The number of decimal digits it has is: 11
• The sum of 18198431218's digits is 46
• More coming soon!