18522185 has 8 divisors (see below), whose sum is σ = 24247296. Its totient is φ = 13470640.

The previous prime is 18522173. The next prime is 18522187. The reversal of 18522185 is 58122581.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18522185 - 2¹⁰ = 18521161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18522187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168329 + ... + 168438.

It is an arithmetic number, because the mean of its divisors is an integer number (3030912).

Almost surely, 2^18522185 is an apocalyptic number.

It is an amenable number.

18522185 is a deficient number, since it is larger than the sum of its proper divisors (5725111).

18522185 is a wasteful number, since it uses less digits than its factorization.

18522185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336783.

The product of its digits is 6400, while the sum is 32.

The square root of 18522185 is about 4303.7408146867. The cubic root of 18522185 is about 264.5843013722.

The spelling of 18522185 in words is "eighteen million, five hundred twenty-two thousand, one hundred eighty-five".