18605974 has 4 divisors (see below), whose sum is σ = 27908964. Its totient is φ = 9302986.

The previous prime is 18605969. The next prime is 18605981. The reversal of 18605974 is 47950681.

18605974 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47950681 = 1493 ⋅32117.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 4651492 + ... + 4651495.

It is an arithmetic number, because the mean of its divisors is an integer number (6977241).

Almost surely, 2^18605974 is an apocalyptic number.

18605974 is a deficient number, since it is larger than the sum of its proper divisors (9302990).

18605974 is an equidigital number, since it uses as much as digits as its factorization.

18605974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9302989.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 18605974 is about 4313.4642690070. The cubic root of 18605974 is about 264.9826688559.

The spelling of 18605974 in words is "eighteen million, six hundred five thousand, nine hundred seventy-four".