18074664 has 40 divisors (see below), whose sum is σ = 50627610. Its totient is φ = 6024672.

The previous prime is 18074629. The next prime is 18074671. The reversal of 18074664 is 46647081.

It can be written as a sum of positive squares in only one way, i.e., 9253764 + 8820900 = 3042^2 + 2970^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13299 + ... + 14594.

Almost surely, 2^18074664 is an apocalyptic number.

It is an amenable number.

18074664 is an abundant number, since it is smaller than the sum of its proper divisors (32552946).

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

18074664 is a wasteful number, since it uses less digits than its factorization.

18074664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27911 (or 27898 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 18074664 is about 4251.4308179718. The cubic root of 18074664 is about 262.4360007243.

It can be divided in two parts, 180 and 74664, that multiplied together give a triangular number (13439520 = T₅₁₈₄).

The spelling of 18074664 in words is "eighteen million, seventy-four thousand, six hundred sixty-four".