18374544 has 30 divisors (see below), whose sum is σ = 51423606. Its totient is φ = 6124800.

The previous prime is 18374527. The next prime is 18374557. The reversal of 18374544 is 44547381.

It can be written as a sum of positive squares in only one way, i.e., 16160400 + 2214144 = 4020^2 + 1488^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 18374499 and 18374508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63657 + ... + 63944.

Almost surely, 2^18374544 is an apocalyptic number.

It is an amenable number.

18374544 is an abundant number, since it is smaller than the sum of its proper divisors (33049062).

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

18374544 is a wasteful number, since it uses less digits than its factorization.

18374544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127615 (or 127606 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 18374544 is about 4286.5538606204. The cubic root of 18374544 is about 263.8794215198.

The spelling of 18374544 in words is "eighteen million, three hundred seventy-four thousand, five hundred forty-four".