18938122 has 16 divisors (see below), whose sum is σ = 32755392. Its totient is φ = 8043840.

The previous prime is 18938107. The next prime is 18938123. The reversal of 18938122 is 22183981.

It is not an unprimeable number, because it can be changed into a prime (18938123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4404 + ... + 7567.

It is an arithmetic number, because the mean of its divisors is an integer number (2047212).

Almost surely, 2^18938122 is an apocalyptic number.

18938122 is a deficient number, since it is larger than the sum of its proper divisors (13817270).

18938122 is a wasteful number, since it uses less digits than its factorization.

18938122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12093.

The product of its digits is 6912, while the sum is 34.

The square root of 18938122 is about 4351.7952617282. The cubic root of 18938122 is about 266.5501737705.

The spelling of 18938122 in words is "eighteen million, nine hundred thirty-eight thousand, one hundred twenty-two".