18889092630 has 48 divisors (see below), whose sum is σ = 51696468720. Its totient is φ = 4771980864.

The previous prime is 18889092617. The next prime is 18889092653. The reversal of 18889092630 is 3629098881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5521417 + ... + 5524836.

It is an arithmetic number, because the mean of its divisors is an integer number (1077009765).

Almost surely, 2^18889092630 is an apocalyptic number.

18889092630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18889092630 is an abundant number, since it is smaller than the sum of its proper divisors (32807376090).

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

18889092630 is a wasteful number, since it uses less digits than its factorization.

18889092630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11046285 (or 11046282 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 18889092630 in words is "eighteen billion, eight hundred eighty-nine million, ninety-two thousand, six hundred thirty".