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18676077719 = 131784507139
BaseRepresentation
bin10001011001001011…
…100101010010010111
31210012120100001022012
4101121023211102113
5301222033441334
612325113054435
71230545020115
oct213113452227
953176301265
1018676077719
117a14182682
1237526b741b
1319b8315180
14c92538ab5
157449029ce
hex4592e5497

18676077719 has 8 divisors (see below), whose sum is σ = 21295799280. Its totient is φ = 16225370496.

The previous prime is 18676077703. The next prime is 18676077733. The reversal of 18676077719 is 91777067681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18676077719 - 24 = 18676077703 is a prime.

It is a super-2 number, since 2×186760777192 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18676071719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42253349 + ... + 42253790.

It is an arithmetic number, because the mean of its divisors is an integer number (2661974910).

Almost surely, 218676077719 is an apocalyptic number.

18676077719 is a deficient number, since it is larger than the sum of its proper divisors (2619721561).

18676077719 is a wasteful number, since it uses less digits than its factorization.

18676077719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84507169.

The product of its (nonzero) digits is 6223392, while the sum is 59.

The spelling of 18676077719 in words is "eighteen billion, six hundred seventy-six million, seventy-seven thousand, seven hundred nineteen".

Divisors: 1 13 17 221 84507139 1098592807 1436621363 18676077719