18113442 has 16 divisors (see below), whose sum is σ = 36387840. Its totient is φ = 6010992.

The previous prime is 18113437. The next prime is 18113467. The reversal of 18113442 is 24431181.

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, 5218 + ... + 7965.

It is an arithmetic number, because the mean of its divisors is an integer number (2274240).

Almost surely, 2^18113442 is an apocalyptic number.

18113442 is an abundant number, since it is smaller than the sum of its proper divisors (18274398).

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

18113442 is a wasteful number, since it uses less digits than its factorization.

18113442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13417.

The product of its digits is 768, while the sum is 24.

The square root of 18113442 is about 4255.9889567526. The cubic root of 18113442 is about 262.6235463786.

It can be divided in two parts, 1811 and 3442, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 18113442 in words is "eighteen million, one hundred thirteen thousand, four hundred forty-two".