18874474 has 16 divisors (see below), whose sum is σ = 29352960. Its totient is φ = 9092880.

The previous prime is 18874459. The next prime is 18874481. The reversal of 18874474 is 47447881.

18874474 = 327² + 328² + ... + 450².

It is a self number, because there is not a number n which added to its sum of digits gives 18874474.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17647 + ... + 18685.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^18874474 is an apocalyptic number.

18874474 is a deficient number, since it is larger than the sum of its proper divisors (10478486).

18874474 is a wasteful number, since it uses less digits than its factorization.

18874474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365.

The product of its digits is 200704, while the sum is 43.

The square root of 18874474 is about 4344.4762630264. The cubic root of 18874474 is about 266.2512277784.

The spelling of 18874474 in words is "eighteen million, eight hundred seventy-four thousand, four hundred seventy-four".