18345275 has 24 divisors (see below), whose sum is σ = 25040064. Its totient is φ = 13248000.

The previous prime is 18345263. The next prime is 18345281. The reversal of 18345275 is 57254381.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-18345275 is a prime.

It is a super-2 number, since 2×18345275² = 673098229651250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14675 + ... + 15875.

It is an arithmetic number, because the mean of its divisors is an integer number (1043336).

Almost surely, 2^18345275 is an apocalyptic number.

18345275 is a deficient number, since it is larger than the sum of its proper divisors (6694789).

18345275 is a wasteful number, since it uses less digits than its factorization.

18345275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271 (or 1266 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 18345275 is about 4283.1384521166. The cubic root of 18345275 is about 263.7392349776.

The spelling of 18345275 in words is "eighteen million, three hundred forty-five thousand, two hundred seventy-five".