18460442 has 32 divisors (see below), whose sum is σ = 37183104. Its totient is φ = 6638400.

The previous prime is 18460439. The next prime is 18460489. The reversal of 18460442 is 24406481.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 15 ways as a sum of consecutive naturals, for example, 2609 + ... + 6612.

It is an arithmetic number, because the mean of its divisors is an integer number (1161972).

Almost surely, 2^18460442 is an apocalyptic number.

18460442 is an abundant number, since it is smaller than the sum of its proper divisors (18722662).

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

18460442 is a wasteful number, since it uses less digits than its factorization.

18460442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9254.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 18460442 is about 4296.5616485744. The cubic root of 18460442 is about 264.2899801878.

The spelling of 18460442 in words is "eighteen million, four hundred sixty thousand, four hundred forty-two".