18966245 has 8 divisors (see below), whose sum is σ = 22847616. Its totient is φ = 15114256.

The previous prime is 18966229. The next prime is 18966251. The reversal of 18966245 is 54266981.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18966245 - 2⁴ = 18966229 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, 5897 + ... + 8526.

It is an arithmetic number, because the mean of its divisors is an integer number (2855952).

Almost surely, 2^18966245 is an apocalyptic number.

It is an amenable number.

18966245 is a deficient number, since it is larger than the sum of its proper divisors (3881371).

18966245 is a wasteful number, since it uses less digits than its factorization.

18966245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14691.

The product of its digits is 103680, while the sum is 41.

The square root of 18966245 is about 4355.0252582505. The cubic root of 18966245 is about 266.6820503278.

The spelling of 18966245 in words is "eighteen million, nine hundred sixty-six thousand, two hundred forty-five".