18111234 has 8 divisors (see below), whose sum is σ = 36222480. Its totient is φ = 6037076.

The previous prime is 18111229. The next prime is 18111251. The reversal of 18111234 is 43211181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

18111234 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 18111234.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1509264 + ... + 1509275.

It is an arithmetic number, because the mean of its divisors is an integer number (4527810).

Almost surely, 2^18111234 is an apocalyptic number.

18111234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18111234 is a wasteful number, since it uses less digits than its factorization.

18111234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018544.

The product of its digits is 192, while the sum is 21.

The square root of 18111234 is about 4255.7295496777. The cubic root of 18111234 is about 262.6128748130.

The spelling of 18111234 in words is "eighteen million, one hundred eleven thousand, two hundred thirty-four".