18995022 has 24 divisors (see below), whose sum is σ = 43322760. Its totient is φ = 5998320.

The previous prime is 18995021. The next prime is 18995027. The reversal of 18995022 is 22059981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18995021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27429 + ... + 28112.

It is an arithmetic number, because the mean of its divisors is an integer number (1805115).

Almost surely, 2^18995022 is an apocalyptic number.

18995022 is an abundant number, since it is smaller than the sum of its proper divisors (24327738).

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

18995022 is a wasteful number, since it uses less digits than its factorization.

18995022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55568 (or 55565 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 18995022 is about 4358.3278903726. The cubic root of 18995022 is about 266.8168587956.

The spelling of 18995022 in words is "eighteen million, nine hundred ninety-five thousand, twenty-two".