18817074 has 12 divisors (see below), whose sum is σ = 40770366. Its totient is φ = 6272352.

The previous prime is 18817063. The next prime is 18817081. The reversal of 18817074 is 47071881.

It can be written as a sum of positive squares in only one way, i.e., 15944049 + 2873025 = 3993^2 + 1695^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 522679 + ... + 522714.

Almost surely, 2^18817074 is an apocalyptic number.

18817074 is an abundant number, since it is smaller than the sum of its proper divisors (21953292).

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

18817074 is a wasteful number, since it uses less digits than its factorization.

18817074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045401 (or 1045398 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 18817074 is about 4337.8651431320. The cubic root of 18817074 is about 265.9810509048.

The spelling of 18817074 in words is "eighteen million, eight hundred seventeen thousand, seventy-four".