18922589889 has 16 divisors (see below), whose sum is σ = 28891763712. Its totient is φ = 10791405648.

The previous prime is 18922589869. The next prime is 18922589897. The reversal of 18922589889 is 98898522981.

It is not a de Polignac number, because 18922589889 - 2⁸ = 18922589633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18922589869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 885139 + ... + 906264.

It is an arithmetic number, because the mean of its divisors is an integer number (1805735232).

Almost surely, 2^18922589889 is an apocalyptic number.

It is an amenable number.

18922589889 is a deficient number, since it is larger than the sum of its proper divisors (9969173823).

18922589889 is a wasteful number, since it uses less digits than its factorization.

18922589889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791916.

The product of its digits is 59719680, while the sum is 69.

The spelling of 18922589889 in words is "eighteen billion, nine hundred twenty-two million, five hundred eighty-nine thousand, eight hundred eighty-nine".