18252297 has 20 divisors (see below), whose sum is σ = 31161856. Its totient is φ = 10429560.

The previous prime is 18252287. The next prime is 18252301. The reversal of 18252297 is 79225281.

It is not a de Polignac number, because 18252297 - 2¹¹ = 18250249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18252277) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15529 + ... + 16662.

Almost surely, 2^18252297 is an apocalyptic number.

It is an amenable number.

18252297 is a deficient number, since it is larger than the sum of its proper divisors (12909559).

18252297 is an equidigital number, since it uses as much as digits as its factorization.

18252297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32210 (or 32201 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 18252297 is about 4272.2707077150. The cubic root of 18252297 is about 263.2929167618.

The spelling of 18252297 in words is "eighteen million, two hundred fifty-two thousand, two hundred ninety-seven".