18618042 has 32 divisors (see below), whose sum is σ = 38707200. Its totient is φ = 5963760.

The previous prime is 18617987. The next prime is 18618049. The reversal of 18618042 is 24081681.

It is not an unprimeable number, because it can be changed into a prime (18618049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36763 + ... + 37265.

It is an arithmetic number, because the mean of its divisors is an integer number (1209600).

Almost surely, 2^18618042 is an apocalyptic number.

18618042 is an abundant number, since it is smaller than the sum of its proper divisors (20089158).

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

18618042 is a wasteful number, since it uses less digits than its factorization.

18618042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 18618042 is about 4314.8629178689. The cubic root of 18618042 is about 265.0399465116.

The spelling of 18618042 in words is "eighteen million, six hundred eighteen thousand, forty-two".