18036904 has 16 divisors (see below), whose sum is σ = 33866100. Its totient is φ = 9005952.

The previous prime is 18036877. The next prime is 18036923. The reversal of 18036904 is 40963081.

It can be written as a sum of positive squares in 2 ways, for example, as 12974404 + 5062500 = 3602^2 + 2250^2 .

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, 8034 + ... + 10030.

Almost surely, 2^18036904 is an apocalyptic number.

It is an amenable number.

18036904 is a deficient number, since it is larger than the sum of its proper divisors (15829196).

18036904 is a wasteful number, since it uses less digits than its factorization.

18036904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132 (or 3128 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 18036904 is about 4246.9876383150. The cubic root of 18036904 is about 262.2531205677.

Adding to 18036904 its reverse (40963081), we get a palindrome (58999985).

The spelling of 18036904 in words is "eighteen million, thirty-six thousand, nine hundred four".