18522068 has 12 divisors (see below), whose sum is σ = 33531540. Its totient is φ = 8941632.

The previous prime is 18522059. The next prime is 18522073. The reversal of 18522068 is 86022581.

It can be written as a sum of positive squares in 2 ways, for example, as 3139984 + 15382084 = 1772^2 + 3922^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79721 + ... + 79952.

It is an arithmetic number, because the mean of its divisors is an integer number (2794295).

Almost surely, 2^18522068 is an apocalyptic number.

It is an amenable number.

18522068 is a deficient number, since it is larger than the sum of its proper divisors (15009472).

18522068 is a wasteful number, since it uses less digits than its factorization.

18522068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159706 (or 159704 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 18522068 is about 4303.7272218392. The cubic root of 18522068 is about 264.5837442668.

The spelling of 18522068 in words is "eighteen million, five hundred twenty-two thousand, sixty-eight".