18934732 has 24 divisors (see below), whose sum is σ = 33764976. Its totient is φ = 9289728.

The previous prime is 18934679. The next prime is 18934733. The reversal of 18934732 is 23743981.

It is a junction number, because it is equal to n+sod(n) for n = 18934691 and 18934700.

It is not an unprimeable number, because it can be changed into a prime (18934733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73548 + ... + 73804.

It is an arithmetic number, because the mean of its divisors is an integer number (1406874).

Almost surely, 2^18934732 is an apocalyptic number.

It is an amenable number.

18934732 is a deficient number, since it is larger than the sum of its proper divisors (14830244).

18934732 is a wasteful number, since it uses less digits than its factorization.

18934732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 535 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 18934732 is about 4351.4057498698. The cubic root of 18934732 is about 266.5342683037.

Subtracting 18934732 from its reverse (23743981), we obtain a square (4809249 = 2193²).

The spelling of 18934732 in words is "eighteen million, nine hundred thirty-four thousand, seven hundred thirty-two".