18104974 has 4 divisors (see below), whose sum is σ = 27157464. Its totient is φ = 9052486.

The previous prime is 18104939. The next prime is 18104987. The reversal of 18104974 is 47940181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47940181 = 5477 ⋅8753.

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, 4526242 + ... + 4526245.

It is an arithmetic number, because the mean of its divisors is an integer number (6789366).

Almost surely, 2^18104974 is an apocalyptic number.

18104974 is a deficient number, since it is larger than the sum of its proper divisors (9052490).

18104974 is an equidigital number, since it uses as much as digits as its factorization.

18104974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9052489.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 18104974 is about 4254.9940070463. The cubic root of 18104974 is about 262.5826146617.

The spelling of 18104974 in words is "eighteen million, one hundred four thousand, nine hundred seventy-four".