18438041979

Names of 18438041979

• Cardinal: 18438041979 can be written as Eighteen billion, four hundred thirty-eight million, forty-one thousand, nine hundred seventy-nine.

Scientific notation

• Scientific notation: 1.8438041979 × 10¹⁰

Factors of 18438041979

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 392

Divisors of 18438041979

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 9 21 29 49 63 87 89 97 147 167 203 261 267 291 441 501 609 623 679 801 873 1169 1421 1503 1827 1869 2037 2581 2813 3507 4263 4361 4753 4843 5607 6111 7743 8183 8439 8633 10521 12789 13083 14259 14529 14863 16199 18067 19691 23229 24549 25317 25899 33901 39249 42777 43587 44589 48597 54201 59073 60431 73647 77697 101703 104041 113393 126469 133767 137837 145791 162603 177219 181293 237307 250357 305109 312123 340179 379407 413511 423017 431027 469771 543879 711921 728287 751071 793751 936369 1020537 1138221 1240533 1269051 1293081 1409313 1441711 1752499 2135763 2184861 2253213 2381253 3017189 3288397 3807153 3879243 4227939 4325133 5257497 6554583 7143759 9051567 9865191 10091977 12267493 12975399 15772491 21120323 23018779 27154701 29595573 30275931 36802479 41809619 63360969 69056337 70643839 90827793 110407437 125428857 190082907 207169011 211931517 292667333 376286571 635794551 878001999 2048671331 2634005997 6146013993 18438041979
• Sum of all divisors σ(n): 32939524800
• Sum of proper divisors (its aliquot sum) s(n): 14501482821
• 18438041979 is a deficient number, because the sum of its proper divisors (14501482821) is less than itself. Its deficiency is 3936559158

Bases of 18438041979

• Binary: 10001001010111111100011000101111011₂
• Hexadecimal: 0x44AFE317B
• Base-36: 8GXJ88R

Squares and roots of 18438041979

• 18438041979 squared (18438041979²) is 339961392019366236441
• 18438041979 cubed (18438041979³) is 6268222417292350248474397556739
• The square root of 18438041979 is 135786.7518537799
• The cube root of 18438041979 is 2641.8303985893

Scales and comparisons

• 18,438,041,979 seconds is equal to 586 years, 14 weeks, 1 day, 6 hours, 19 minutes, 39 seconds.
• To count from 1 to 18,438,041,979 would take you about one thousand, one hundred seventy-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 18438041979 cubic inches would be around 220.2 feet tall.

Recreational maths with 18438041979

• 18438041979 backwards is 97914083481
• The number of decimal digits it has is: 11
• The sum of 18438041979's digits is 54
• More coming soon!