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18674500980 = 2235387780279
BaseRepresentation
bin10001011001000101…
…100100010101110100
31210012110100221102110
4101121011210111310
5301221133012410
612325015211020
71230525432162
oct213105442564
953173327373
1018674500980
117a132a5a93
123752076a70
1319b7bb25a5
14c92248232
157446e0720
hex459164574

18674500980 has 48 divisors (see below), whose sum is σ = 52302741120. Its totient is φ = 4978520448.

The previous prime is 18674500939. The next prime is 18674500993. The reversal of 18674500980 is 8900547681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192481 + ... + 272759.

It is an arithmetic number, because the mean of its divisors is an integer number (1089640440).

Almost surely, 218674500980 is an apocalyptic number.

18674500980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18674500980 is an abundant number, since it is smaller than the sum of its proper divisors (33628240140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18674500980 is a wasteful number, since it uses less digits than its factorization.

18674500980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84168 (or 84166 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 18674500980 in words is "eighteen billion, six hundred seventy-four million, five hundred thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 3877 7754 11631 15508 19385 23262 38770 46524 58155 77540 80279 116310 160558 232620 240837 321116 401395 481674 802790 963348 1204185 1605580 2408370 4816740 311241683 622483366 933725049 1244966732 1556208415 1867450098 3112416830 3734900196 4668625245 6224833660 9337250490 18674500980