18668332 has 12 divisors (see below), whose sum is σ = 33083680. Its totient is φ = 9215856.

The previous prime is 18668327. The next prime is 18668333. The reversal of 18668332 is 23386681.

It is a junction number, because it is equal to n+sod(n) for n = 18668291 and 18668300.

It is not an unprimeable number, because it can be changed into a prime (18668333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29223 + ... + 29854.

Almost surely, 2^18668332 is an apocalyptic number.

It is an amenable number.

18668332 is a deficient number, since it is larger than the sum of its proper divisors (14415348).

18668332 is a wasteful number, since it uses less digits than its factorization.

18668332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59160 (or 59158 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 18668332 is about 4320.6865195244. The cubic root of 18668332 is about 265.2783689307.

The spelling of 18668332 in words is "eighteen million, six hundred sixty-eight thousand, three hundred thirty-two".