18842974 has 8 divisors (see below), whose sum is σ = 28662768. Its totient is φ = 9288720.

The previous prime is 18842969. The next prime is 18842977. The reversal of 18842974 is 47924881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18842974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18842977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66207 + ... + 66490.

It is an arithmetic number, because the mean of its divisors is an integer number (3582846).

Almost surely, 2^18842974 is an apocalyptic number.

18842974 is a deficient number, since it is larger than the sum of its proper divisors (9819794).

18842974 is a wasteful number, since it uses less digits than its factorization.

18842974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132770.

The product of its digits is 129024, while the sum is 43.

The square root of 18842974 is about 4340.8494560397. The cubic root of 18842974 is about 266.1030279097.

The spelling of 18842974 in words is "eighteen million, eight hundred forty-two thousand, nine hundred seventy-four".