18975674 has 4 divisors (see below), whose sum is σ = 28463514. Its totient is φ = 9487836.

The previous prime is 18975653. The next prime is 18975679. The reversal of 18975674 is 47657981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17430625 + 1545049 = 4175^2 + 1243^2 .

It is not an unprimeable number, because it can be changed into a prime (18975679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4743917 + ... + 4743920.

Almost surely, 2^18975674 is an apocalyptic number.

18975674 is a deficient number, since it is larger than the sum of its proper divisors (9487840).

18975674 is an equidigital number, since it uses as much as digits as its factorization.

18975674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9487839.

The product of its digits is 423360, while the sum is 47.

The square root of 18975674 is about 4356.1076662544. The cubic root of 18975674 is about 266.7262363447.

The spelling of 18975674 in words is "eighteen million, nine hundred seventy-five thousand, six hundred seventy-four".