18518048 has 12 divisors (see below), whose sum is σ = 36457470. Its totient is φ = 9259008.

The previous prime is 18518039. The next prime is 18518051. The reversal of 18518048 is 84081581.

It can be written as a sum of positive squares in only one way, i.e., 10061584 + 8456464 = 3172^2 + 2908^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18517999 and 18518017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289313 + ... + 289376.

Almost surely, 2^18518048 is an apocalyptic number.

It is an amenable number.

18518048 is a deficient number, since it is larger than the sum of its proper divisors (17939422).

18518048 is an equidigital number, since it uses as much as digits as its factorization.

18518048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578699 (or 578691 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 18518048 is about 4303.2601594605. The cubic root of 18518048 is about 264.5646012709.

The spelling of 18518048 in words is "eighteen million, five hundred eighteen thousand, forty-eight".