18968432 has 20 divisors (see below), whose sum is σ = 42001776. Its totient is φ = 8129280.

The previous prime is 18968429. The next prime is 18968449. The reversal of 18968432 is 23486981.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18968432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84569 + ... + 84792.

Almost surely, 2^18968432 is an apocalyptic number.

It is an amenable number.

18968432 is an abundant number, since it is smaller than the sum of its proper divisors (23033344).

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

18968432 is a wasteful number, since it uses less digits than its factorization.

18968432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169376 (or 169370 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 18968432 is about 4355.2763402567. The cubic root of 18968432 is about 266.6923003136.

The spelling of 18968432 in words is "eighteen million, nine hundred sixty-eight thousand, four hundred thirty-two".