18745974 has 24 divisors (see below), whose sum is σ = 43741152. Its totient is φ = 5767920.

The previous prime is 18745967. The next prime is 18746003. The reversal of 18745974 is 47954781.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39822 + ... + 40289.

It is an arithmetic number, because the mean of its divisors is an integer number (1822548).

Almost surely, 2^18745974 is an apocalyptic number.

18745974 is an abundant number, since it is smaller than the sum of its proper divisors (24995178).

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

18745974 is a wasteful number, since it uses less digits than its factorization.

18745974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80132 (or 80129 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 18745974 is about 4329.6621115279. The cubic root of 18745974 is about 265.6456264306.

The spelling of 18745974 in words is "eighteen million, seven hundred forty-five thousand, nine hundred seventy-four".