18540275 has 12 divisors (see below), whose sum is σ = 24758832. Its totient is φ = 13691040.

The previous prime is 18540259. The next prime is 18540311. The reversal of 18540275 is 57204581.

It is not a de Polignac number, because 18540275 - 2⁴ = 18540259 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28199 + ... + 28848.

It is an arithmetic number, because the mean of its divisors is an integer number (2063236).

Almost surely, 2^18540275 is an apocalyptic number.

18540275 is a deficient number, since it is larger than the sum of its proper divisors (6218557).

18540275 is a wasteful number, since it uses less digits than its factorization.

18540275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57070 (or 57065 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 18540275 is about 4305.8419618003. The cubic root of 18540275 is about 264.6704102310.

The spelling of 18540275 in words is "eighteen million, five hundred forty thousand, two hundred seventy-five".