18494788 has 12 divisors (see below), whose sum is σ = 34855660. Its totient is φ = 8536032.

The previous prime is 18494767. The next prime is 18494797. The reversal of 18494788 is 88749481.

It can be written as a sum of positive squares in 2 ways, for example, as 10188864 + 8305924 = 3192^2 + 2882^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177783 + ... + 177886.

Almost surely, 2^18494788 is an apocalyptic number.

It is an amenable number.

18494788 is a deficient number, since it is larger than the sum of its proper divisors (16360872).

18494788 is a wasteful number, since it uses less digits than its factorization.

18494788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355686 (or 355684 counting only the distinct ones).

The product of its digits is 516096, while the sum is 49.

The square root of 18494788 is about 4300.5567081484. The cubic root of 18494788 is about 264.4537841382.

The spelling of 18494788 in words is "eighteen million, four hundred ninety-four thousand, seven hundred eighty-eight".