18743874 has 16 divisors (see below), whose sum is σ = 38195712. Its totient is φ = 6129968.

The previous prime is 18743869. The next prime is 18743891. The reversal of 18743874 is 47834781.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

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, 29154 + ... + 29789.

It is an arithmetic number, because the mean of its divisors is an integer number (2387232).

Almost surely, 2^18743874 is an apocalyptic number.

18743874 is an abundant number, since it is smaller than the sum of its proper divisors (19451838).

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

18743874 is a wasteful number, since it uses less digits than its factorization.

18743874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59001.

The product of its digits is 150528, while the sum is 42.

The square root of 18743874 is about 4329.4195915850. The cubic root of 18743874 is about 265.6357064935.

The spelling of 18743874 in words is "eighteen million, seven hundred forty-three thousand, eight hundred seventy-four".