138181507191

Names of 138181507191

• Cardinal: 138181507191 can be written as One hundred thirty-eight billion, one hundred eighty-one million, five hundred seven thousand, one hundred ninety-one.

Scientific notation

• Scientific notation: 1.38181507191 × 10¹¹

Factors of 138181507191

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 329

Divisors of 138181507191

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 7 9 13 21 23 39 49 63 69 91 117 147 161 207 273 283 299 343 441 483 529 637 819 849 897 1029 1127 1449 1587 1911 1981 2093 2547 2691 3087 3381 3679 3703 4459 4761 5733 5943 6279 6509 6877 7889 10143 11037 11109 12167 13377 13867 14651 17829 18837 19527 20631 23667 25753 25921 33111 33327 36501 40131 41601 43953 45563 48139 58581 61893 71001 77259 77763 84617 85169 97069 102557 109503 124803 131859 136689 144417 149707 158171 180271 181447 231777 233289 253851 255507 291207 307671 318941 336973 410067 433251 449121 474513 540813 544341 592319 596183 761553 766521 873621 923013 956823 1010919 1047949 1107197 1261897 1347363 1423539 1622439 1633023 1776957 1788549 1946191 2232587 2358811 2870469 3032757 3143847 3321591 3443261 3785691 4146233 4173281 5330871 5365647 5838573 6697761 7076433 7335643 7750379 9431541 9964773 10329783 11357073 12438699 12519843 13623337 17515719 20093283 21229299 22006929 23251137 24102827 29023631 30989349 37316097 37559529 40870011 44762393 51349501 54252653 66020787 69753411 72308481 87070893 95363359 122610033 134287179 154048503 162757959 168719789 216925443 261212679 286090077 313336751 402861537 462145509 488273877 506159367 667543513 858270231 940010253 1181038523 1518478101 2002630539 2193357257 2820030759 3543115569 6007891617 6580071771 10629346707 15353500799 19740215313 46060502397 138181507191
• Sum of all divisors σ(n): 262988544000
• Sum of proper divisors (its aliquot sum) s(n): 124807036809
• 138181507191 is a deficient number, because the sum of its proper divisors (124807036809) is less than itself. Its deficiency is 13374470382

Bases of 138181507191

• Binary: 10000000101100010000100111100001110111₂
• Hexadecimal: 0x202C427877
• Base-36: 1RH9P9BR

Squares and roots of 138181507191

• 138181507191 squared (138181507191²) is 19094128929576384710481
• 138181507191 cubed (138181507191³) is 2638455513988140336455112754568871
• The square root of 138181507191 is 371727.7326095001
• The cube root of 138181507191 is 5169.9138769391

Scales and comparisons

• 138,181,507,191 seconds is equal to 4,393 years, 38 weeks, 4 days, 23 hours, 59 minutes, 51 seconds.
• To count from 1 to 138,181,507,191 would take you about eight thousand, seven hundred eighty-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 138181507191 cubic inches would be around 430.8 feet tall.

Recreational maths with 138181507191

• 138181507191 backwards is 191705181831
• The number of decimal digits it has is: 12
• The sum of 138181507191's digits is 45
• More coming soon!