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18677680092 = 22323491486603
BaseRepresentation
bin10001011001010001…
…101100011111011100
31210012200100110100100
4101121101230133130
5301222441230332
612325211301100
71230564442551
oct213121543734
953180313310
1018677680092
117a15077555
12375314a790
1319b8756616
14c92834a28
15744b1c67c
hex45946c7dc

18677680092 has 36 divisors (see below), whose sum is σ = 47348337400. Its totient is φ = 6208049952.

The previous prime is 18677680019. The next prime is 18677680129. The reversal of 18677680092 is 29008677681.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 730738 + ... + 755865.

Almost surely, 218677680092 is an apocalyptic number.

18677680092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18677680092 is an abundant number, since it is smaller than the sum of its proper divisors (28670657308).

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

18677680092 is a wasteful number, since it uses less digits than its factorization.

18677680092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486962 (or 1486957 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 18677680092 in words is "eighteen billion, six hundred seventy-seven million, six hundred eighty thousand, ninety-two".

Divisors: 1 2 3 4 6 9 12 18 36 349 698 1047 1396 2094 3141 4188 6282 12564 1486603 2973206 4459809 5946412 8919618 13379427 17839236 26758854 53517708 518824447 1037648894 1556473341 2075297788 3112946682 4669420023 6225893364 9338840046 18677680092