18668285 has 8 divisors (see below), whose sum is σ = 22442496. Its totient is φ = 14907600.

The previous prime is 18668269. The next prime is 18668291. The reversal of 18668285 is 58286681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18668285 - 2⁴ = 18668269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41 + ... + 6110.

It is an arithmetic number, because the mean of its divisors is an integer number (2805312).

Almost surely, 2^18668285 is an apocalyptic number.

It is an amenable number.

18668285 is a deficient number, since it is larger than the sum of its proper divisors (3774211).

18668285 is an equidigital number, since it uses as much as digits as its factorization.

18668285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6763.

The product of its digits is 184320, while the sum is 44.

The square root of 18668285 is about 4320.6810805705. The cubic root of 18668285 is about 265.2781463060.

The spelling of 18668285 in words is "eighteen million, six hundred sixty-eight thousand, two hundred eighty-five".