18387642350649

Names of 18387642350649

• Cardinal: 18387642350649 can be written as Eighteen trillion, three hundred eighty-seven billion, six hundred forty-two million, three hundred fifty thousand, six hundred forty-nine.

Scientific notation

• Scientific notation: 1.8387642350649 × 10¹³

Factors of 18387642350649

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5037

Divisors of 18387642350649

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 11 13 29 33 39 87 89 121 143 267 319 331 363 377 429 957 979 993 1131 1157 1573 2581 2937 3471 3509 3641 4147 4303 4561 4719 7743 9599 10527 10769 10923 12441 12727 12909 13683 28391 28797 29459 32307 33553 38181 40051 45617 47333 50171 59293 85173 88377 100659 105589 120153 124787 132269 136851 139997 141999 150513 177879 312301 316767 324049 369083 374361 382967 396807 405929 419991 520663 551881 652223 854311 936903 972147 1107249 1148901 1161479 1217787 1372657 1454959 1509691 1561989 1655643 1719497 1956669 2562933 3484437 3564539 4059913 4117971 4212637 4364877 4465219 4529073 5158491 5277077 7174453 9397421 10693617 11106043 11771941 12179739 12637911 13395657 15099227 15831231 16004549 16606601 18914467 19625983 21523359 28192263 33318129 35315823 43781039 45297681 46339007 48013647 49117409 49819803 56743401 58047847 58877949 103371631 122166473 129491351 131343117 134362499 139017021 147352227 153035233 174143541 182672611 208059137 215885813 310114893 366499419 388474053 403087497 459105699 481591429 548017833 569153507 624177411 638526317 647657439 1343831203 1424404861 1444774287 1477987489 1683387563 1707460521 1746712487 1915578951 2374743943 3896512471 4031493609 4273214583 4433962467 5050162689 5240137461 5297505719 6260688577 7124231829 11689537413 15892517157 16257862379 18517263193 18782065731 19213837357 42861637181 48773587137 50654662123 55551789579 57641512071 68867574347 128584911543 151963986369 206602723041 211352210927 471478008991 557201283353 634056632781 1414434026973 1671603850059 6129214116883 18387642350649
• Sum of all divisors σ(n): 30457678406400
• Sum of proper divisors (its aliquot sum) s(n): 12070036055751
• 18387642350649 is a deficient number, because the sum of its proper divisors (12070036055751) is less than itself. Its deficiency is 6317606294898

Bases of 18387642350649

• Binary: 100001011100100110100111000111111110000111001₂
• Hexadecimal: 0x10B934E3FC39
• Base-36: 6IN5ZI0XL

Squares and roots of 18387642350649

• 18387642350649 squared (18387642350649²) is 338105391215380682270721201
• 18387642350649 cubed (18387642350649³) is 6216961010494682203591789383344160409449
• The square root of 18387642350649 is 4288081.4300394297
• The cube root of 18387642350649 is 26394.2109047695

Scales and comparisons

• 18,387,642,350,649 seconds is equal to 584,670 years, 7 weeks, 5 days, 14 hours, 44 minutes, 9 seconds.
• To count from 1 to 18,387,642,350,649 would take you about one million, four hundred sixty-one thousand, six hundred seventy-five 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 18387642350649 cubic inches would be around 2199.5 feet tall.

Recreational maths with 18387642350649

• 18387642350649 backwards is 94605324678381
• The number of decimal digits it has is: 14
• The sum of 18387642350649's digits is 66
• More coming soon!