18339342 has 16 divisors (see below), whose sum is σ = 41918592. Its totient is φ = 5239800.

The previous prime is 18339337. The next prime is 18339361. The reversal of 18339342 is 24393381.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218284 + ... + 218367.

It is an arithmetic number, because the mean of its divisors is an integer number (2619912).

Almost surely, 2^18339342 is an apocalyptic number.

18339342 is an abundant number, since it is smaller than the sum of its proper divisors (23579250).

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

18339342 is a wasteful number, since it uses less digits than its factorization.

18339342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436663.

The product of its digits is 15552, while the sum is 33.

The square root of 18339342 is about 4282.4457965046. The cubic root of 18339342 is about 263.7108001609.

It can be divided in two parts, 18339 and 342, that added together give a palindrome (18681).

The spelling of 18339342 in words is "eighteen million, three hundred thirty-nine thousand, three hundred forty-two".