18789064 has 16 divisors (see below), whose sum is σ = 40262400. Its totient is φ = 8052432.

The previous prime is 18789059. The next prime is 18789073. The reversal of 18789064 is 46098781.

It is a self number, because there is not a number n which added to its sum of digits gives 18789064.

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, 167704 + ... + 167815.

It is an arithmetic number, because the mean of its divisors is an integer number (2516400).

Almost surely, 2^18789064 is an apocalyptic number.

18789064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18789064 is an abundant number, since it is smaller than the sum of its proper divisors (21473336).

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

18789064 is a wasteful number, since it uses less digits than its factorization.

18789064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335532 (or 335528 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 18789064 is about 4334.6353941249. The cubic root of 18789064 is about 265.8490107356.

The spelling of 18789064 in words is "eighteen million, seven hundred eighty-nine thousand, sixty-four".