18213744185

Names of 18213744185

• Cardinal: 18213744185 can be written as Eighteen billion, two hundred thirteen million, seven hundred forty-four thousand, one hundred eighty-five.

Scientific notation

• Scientific notation: 1.8213744185 × 10¹⁰

Factors of 18213744185

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 148

Divisors of 18213744185

• Number of divisors d(n): 192
• Complete list of divisors:
  1 5 7 13 19 31 35 49 65 73 91 95 133 155 217 245 247 343 361 365 403 455 511 589 637 665 931 949 1085 1235 1387 1519 1715 1729 1805 2015 2263 2527 2555 2821 2945 3185 3577 4123 4459 4655 4693 4745 6517 6643 6935 7595 7657 8645 9709 10633 11191 11315 12103 12635 14105 15841 17689 17885 18031 19747 20615 22295 23465 25039 26353 28861 29419 32585 32851 33215 38285 42997 46501 48545 53165 53599 55955 60515 67963 78337 79205 84721 88445 90155 98735 110887 123823 125195 126217 131765 138229 144305 145483 147095 164255 184471 202027 205933 214985 229957 232505 267995 300979 325507 339815 342589 375193 391685 423605 475741 548359 554435 558961 619115 631085 691145 727415 776209 816943 883519 922355 1010135 1018381 1029665 1149785 1291297 1441531 1504895 1609699 1627535 1712945 1875965 2106853 2378705 2398123 2626351 2741795 2794805 3838513 3881045 3912727 4084715 4417595 5091905 5718601 6184633 6456485 7128667 7207655 8048495 9039079 10090717 10534265 10620259 11990615 13131755 14747971 16786861 19192565 19563635 27389089 28593005 30923165 35643335 40030207 45195395 49900669 50453585 53101295 73739855 74341813 83934305 117508027 136945445 191723623 200151035 249503345 280211449 371709065 520392691 587540135 958618115 1401057245 2601963455 3642748837 18213744185
• Sum of all divisors σ(n): 30314188800
• Sum of proper divisors (its aliquot sum) s(n): 12100444615
• 18213744185 is a deficient number, because the sum of its proper divisors (12100444615) is less than itself. Its deficiency is 6113299570

Bases of 18213744185

• Binary: 10000111101100111111010111000111001₂
• Hexadecimal: 0x43D9FAE39
• Base-36: 8D7ZQYH

Squares and roots of 18213744185

• 18213744185 squared (18213744185²) is 331740477236621314225
• 18213744185 cubed (18213744185³) is 6042236188197636331012651531625
• The square root of 18213744185 is 134958.3053576177
• The cube root of 18213744185 is 2631.0740881677

Scales and comparisons

• 18,213,744,185 seconds is equal to 579 years, 7 weeks, 2 days, 5 hours, 23 minutes, 5 seconds.
• To count from 1 to 18,213,744,185 would take you about one thousand, one hundred fifty-eight 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 18213744185 cubic inches would be around 219.3 feet tall.

Recreational maths with 18213744185

• 18213744185 backwards is 58144731281
• The number of decimal digits it has is: 11
• The sum of 18213744185's digits is 44
• More coming soon!