18494804 has 12 divisors (see below), whose sum is σ = 32534964. Its totient is φ = 9199104.

The previous prime is 18494803. The next prime is 18494831. The reversal of 18494804 is 40849481.

It can be written as a sum of positive squares in 2 ways, for example, as 9909904 + 8584900 = 3148^2 + 2930^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18494803) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11207 + ... + 12750.

It is an arithmetic number, because the mean of its divisors is an integer number (2711247).

Almost surely, 2^18494804 is an apocalyptic number.

It is an amenable number.

18494804 is a deficient number, since it is larger than the sum of its proper divisors (14040160).

18494804 is a wasteful number, since it uses less digits than its factorization.

18494804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24154 (or 24152 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 18494804 is about 4300.5585683723. The cubic root of 18494804 is about 264.4538603986.

The spelling of 18494804 in words is "eighteen million, four hundred ninety-four thousand, eight hundred four".