18968634 has 32 divisors (see below), whose sum is σ = 44634240. Its totient is φ = 5950656.

The previous prime is 18968627. The next prime is 18968657. The reversal of 18968634 is 43686981.

18968634 is a `hidden beast` number, since 1 + 8 + 9 + 6 + 8 + 634 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18968634.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9414 + ... + 11249.

It is an arithmetic number, because the mean of its divisors is an integer number (1394820).

Almost surely, 2^18968634 is an apocalyptic number.

18968634 is an abundant number, since it is smaller than the sum of its proper divisors (25665606).

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

18968634 is a wasteful number, since it uses less digits than its factorization.

18968634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20691 (or 20685 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 18968634 is about 4355.2995304571. The cubic root of 18968634 is about 266.6932470033.

The spelling of 18968634 in words is "eighteen million, nine hundred sixty-eight thousand, six hundred thirty-four".