18922158659 has 4 divisors (see below), whose sum is σ = 19047471120. Its totient is φ = 18796846200.

The previous prime is 18922158637. The next prime is 18922158677. The reversal of 18922158659 is 95685122981.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18922158659 - 2²⁰ = 18921110083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18922158679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62656004 + ... + 62656305.

It is an arithmetic number, because the mean of its divisors is an integer number (4761867780).

Almost surely, 2^18922158659 is an apocalyptic number.

18922158659 is a deficient number, since it is larger than the sum of its proper divisors (125312461).

18922158659 is a wasteful number, since it uses less digits than its factorization.

18922158659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125312460.

The product of its digits is 3110400, while the sum is 56.

The spelling of 18922158659 in words is "eighteen billion, nine hundred twenty-two million, one hundred fifty-eight thousand, six hundred fifty-nine".