18338342 has 16 divisors (see below), whose sum is σ = 31774032. Its totient is φ = 7845120.

The previous prime is 18338323. The next prime is 18338381. The reversal of 18338342 is 24383381.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18338299 and 18338308.

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, 24143 + ... + 24890.

It is an arithmetic number, because the mean of its divisors is an integer number (1985877).

Almost surely, 2^18338342 is an apocalyptic number.

18338342 is a deficient number, since it is larger than the sum of its proper divisors (13435690).

18338342 is a wasteful number, since it uses less digits than its factorization.

18338342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49063.

The product of its digits is 13824, while the sum is 32.

The square root of 18338342 is about 4282.3290392028. The cubic root of 18338342 is about 263.7060069029.

The spelling of 18338342 in words is "eighteen million, three hundred thirty-eight thousand, three hundred forty-two".