18522006 has 16 divisors (see below), whose sum is σ = 37086384. Its totient is φ = 6166944.

The previous prime is 18521999. The next prime is 18522011. The reversal of 18522006 is 60022581.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8616 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (2317899).

Almost surely, 2^18522006 is an apocalyptic number.

18522006 is an abundant number, since it is smaller than the sum of its proper divisors (18564378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18522006 is a wasteful number, since it uses less digits than its factorization.

18522006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18522006 is about 4303.7200187745. The cubic root of 18522006 is about 264.5834490476.

Adding to 18522006 its reverse (60022581), we get a palindrome (78544587).

The spelling of 18522006 in words is "eighteen million, five hundred twenty-two thousand, six".