18540575 has 12 divisors (see below), whose sum is σ = 23335560. Its totient is φ = 14609760.

The previous prime is 18540539. The next prime is 18540581. The reversal of 18540575 is 57504581.

It is not a de Polignac number, because 18540575 - 2¹⁸ = 18278431 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3860 + ... + 7209.

It is an arithmetic number, because the mean of its divisors is an integer number (1944630).

Almost surely, 2^18540575 is an apocalyptic number.

18540575 is a deficient number, since it is larger than the sum of its proper divisors (4794985).

18540575 is a wasteful number, since it uses less digits than its factorization.

18540575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11146 (or 11141 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 18540575 is about 4305.8767980517. The cubic root of 18540575 is about 264.6718377664.

The spelling of 18540575 in words is "eighteen million, five hundred forty thousand, five hundred seventy-five".