18494142 has 16 divisors (see below), whose sum is σ = 37149840. Its totient is φ = 6137792.

The previous prime is 18494131. The next prime is 18494167. The reversal of 18494142 is 24149481.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 5217 + ... + 8012.

It is an arithmetic number, because the mean of its divisors is an integer number (2321865).

Almost surely, 2^18494142 is an apocalyptic number.

18494142 is an abundant number, since it is smaller than the sum of its proper divisors (18655698).

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

18494142 is a wasteful number, since it uses less digits than its factorization.

18494142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13467.

The product of its digits is 9216, while the sum is 33.

The square root of 18494142 is about 4300.4816009373. The cubic root of 18494142 is about 264.4507050881.

The spelling of 18494142 in words is "eighteen million, four hundred ninety-four thousand, one hundred forty-two".