18874374 has 16 divisors (see below), whose sum is σ = 37809408. Its totient is φ = 6281352.

The previous prime is 18874367. The next prime is 18874379. The reversal of 18874374 is 47347881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18874379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2199 + ... + 6525.

It is an arithmetic number, because the mean of its divisors is an integer number (2363088).

Almost surely, 2^18874374 is an apocalyptic number.

18874374 is an abundant number, since it is smaller than the sum of its proper divisors (18935034).

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

18874374 is a wasteful number, since it uses less digits than its factorization.

18874374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059.

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

The square root of 18874374 is about 4344.4647541441. The cubic root of 18874374 is about 266.2507575636.

The spelling of 18874374 in words is "eighteen million, eight hundred seventy-four thousand, three hundred seventy-four".