18809022 has 8 divisors (see below), whose sum is σ = 37618056. Its totient is φ = 6269672.

The previous prime is 18809003. The next prime is 18809027. The reversal of 18809022 is 22090881.

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

18809022 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18809027) 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, 1567413 + ... + 1567424.

It is an arithmetic number, because the mean of its divisors is an integer number (4702257).

Almost surely, 2^18809022 is an apocalyptic number.

18809022 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.

18809022 is a wasteful number, since it uses less digits than its factorization.

18809022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3134842.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 18809022 is about 4336.9369375171. The cubic root of 18809022 is about 265.9431069082.

The spelling of 18809022 in words is "eighteen million, eight hundred nine thousand, twenty-two".