18113942 has 72 divisors (see below), whose sum is σ = 37237872. Its totient is φ = 6462720.

The previous prime is 18113939. The next prime is 18113957. The reversal of 18113942 is 24931181.

It is a super-2 number, since 2×18113942² = 656229789558728, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 489548 + ... + 489584.

Almost surely, 2^18113942 is an apocalyptic number.

18113942 is an abundant number, since it is smaller than the sum of its proper divisors (19123930).

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

18113942 is a wasteful number, since it uses less digits than its factorization.

18113942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 74 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 18113942 is about 4256.0476971011. The cubic root of 18113942 is about 262.6259628264.

It can be divided in two parts, 181139 and 42, that added together give a palindrome (181181).

The spelling of 18113942 in words is "eighteen million, one hundred thirteen thousand, nine hundred forty-two".