18974086 has 4 divisors (see below), whose sum is σ = 28461132. Its totient is φ = 9487042.

The previous prime is 18974071. The next prime is 18974093. The reversal of 18974086 is 68047981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68047981 = 1171 ⋅58111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4743520 + ... + 4743523.

It is an arithmetic number, because the mean of its divisors is an integer number (7115283).

Almost surely, 2^18974086 is an apocalyptic number.

18974086 is a deficient number, since it is larger than the sum of its proper divisors (9487046).

18974086 is an equidigital number, since it uses as much as digits as its factorization.

18974086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487045.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 18974086 is about 4355.9253896273. The cubic root of 18974086 is about 266.7187957117.

The spelling of 18974086 in words is "eighteen million, nine hundred seventy-four thousand, eighty-six".