18315152 has 20 divisors (see below), whose sum is σ = 35854476. Its totient is φ = 9062400.

The previous prime is 18315133. The next prime is 18315163. The reversal of 18315152 is 25151381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8976016 + 9339136 = 2996^2 + 3056^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4349 + ... + 7452.

Almost surely, 2^18315152 is an apocalyptic number.

It is an amenable number.

18315152 is a deficient number, since it is larger than the sum of its proper divisors (17539324).

18315152 is a wasteful number, since it uses less digits than its factorization.

18315152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11906 (or 11900 counting only the distinct ones).

The product of its digits is 1200, while the sum is 26.

The square root of 18315152 is about 4279.6205439268. The cubic root of 18315152 is about 263.5948023411.

The spelling of 18315152 in words is "eighteen million, three hundred fifteen thousand, one hundred fifty-two".