18934368 has 24 divisors (see below), whose sum is σ = 49702968. Its totient is φ = 6311424.

The previous prime is 18934367. The next prime is 18934381. The reversal of 18934368 is 86343981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18934367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98521 + ... + 98712.

It is an arithmetic number, because the mean of its divisors is an integer number (2070957).

Almost surely, 2^18934368 is an apocalyptic number.

It is an amenable number.

18934368 is an abundant number, since it is smaller than the sum of its proper divisors (30768600).

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

18934368 is a wasteful number, since it uses less digits than its factorization.

18934368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197246 (or 197238 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 18934368 is about 4351.3639241047. The cubic root of 18934368 is about 266.5325603472.

The spelling of 18934368 in words is "eighteen million, nine hundred thirty-four thousand, three hundred sixty-eight".