18522975 has 24 divisors (see below), whose sum is σ = 30748032. Its totient is φ = 9839200.

The previous prime is 18522961. The next prime is 18523003. The reversal of 18522975 is 57922581.

It is not a de Polignac number, because 18522975 - 2⁸ = 18522719 is a prime.

It is a congruent 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, 36574 + ... + 37076.

It is an arithmetic number, because the mean of its divisors is an integer number (1281168).

Almost surely, 2^18522975 is an apocalyptic number.

18522975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18522975 is a deficient number, since it is larger than the sum of its proper divisors (12225057).

18522975 is a wasteful number, since it uses less digits than its factorization.

18522975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 1002 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 18522975 is about 4303.8325943280. The cubic root of 18522975 is about 264.5880629627.

The spelling of 18522975 in words is "eighteen million, five hundred twenty-two thousand, nine hundred seventy-five".