18389022 has 16 divisors (see below), whose sum is σ = 36828432. Its totient is φ = 6121280.

The previous prime is 18389009. The next prime is 18389047. The reversal of 18389022 is 22098381.

It is a super-2 number, since 2×18389022² = 676312260232968, which contains 22 as substring.

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, 4018 + ... + 7274.

It is an arithmetic number, because the mean of its divisors is an integer number (2301777).

Almost surely, 2^18389022 is an apocalyptic number.

18389022 is an abundant number, since it is smaller than the sum of its proper divisors (18439410).

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

18389022 is a wasteful number, since it uses less digits than its factorization.

18389022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18389022 is about 4288.2422972589. The cubic root of 18389022 is about 263.9487101922.

The spelling of 18389022 in words is "eighteen million, three hundred eighty-nine thousand, twenty-two".