18916656371 has 8 divisors (see below), whose sum is σ = 19433023680. Its totient is φ = 18400557888.

The previous prime is 18916656293. The next prime is 18916656373. The reversal of 18916656371 is 17365661981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18916656371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18916656373) 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, 79775 + ... + 210231.

It is an arithmetic number, because the mean of its divisors is an integer number (2429127960).

Almost surely, 2^18916656371 is an apocalyptic number.

18916656371 is a deficient number, since it is larger than the sum of its proper divisors (516367309).

18916656371 is a wasteful number, since it uses less digits than its factorization.

18916656371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134413.

The product of its digits is 1632960, while the sum is 53.

The spelling of 18916656371 in words is "eighteen billion, nine hundred sixteen million, six hundred fifty-six thousand, three hundred seventy-one".