18665022 has 8 divisors (see below), whose sum is σ = 37330056. Its totient is φ = 6221672.

The previous prime is 18665021. The next prime is 18665027. The reversal of 18665022 is 22056681.

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

18665022 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18665021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555413 + ... + 1555424.

It is an arithmetic number, because the mean of its divisors is an integer number (4666257).

Almost surely, 2^18665022 is an apocalyptic number.

18665022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18665022 is a wasteful number, since it uses less digits than its factorization.

18665022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110842.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 18665022 is about 4320.3034615638. The cubic root of 18665022 is about 265.2626895562.

The spelling of 18665022 in words is "eighteen million, six hundred sixty-five thousand, twenty-two".