18522885 has 16 divisors (see below), whose sum is σ = 29690496. Its totient is φ = 9860928.

The previous prime is 18522883. The next prime is 18522899. The reversal of 18522885 is 58822581.

It is not a de Polignac number, because 18522885 - 2¹ = 18522883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18522883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13867 + ... + 15143.

It is an arithmetic number, because the mean of its divisors is an integer number (1855656).

Almost surely, 2^18522885 is an apocalyptic number.

18522885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18522885 is a deficient number, since it is larger than the sum of its proper divisors (11167611).

18522885 is a wasteful number, since it uses less digits than its factorization.

18522885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252.

The product of its digits is 51200, while the sum is 39.

The square root of 18522885 is about 4303.8221385183. The cubic root of 18522885 is about 264.5876344325.

The spelling of 18522885 in words is "eighteen million, five hundred twenty-two thousand, eight hundred eighty-five".