163815328 has 12 divisors (see below), whose sum is σ = 322511490. Its totient is φ = 81907648.

The previous prime is 163815263. The next prime is 163815331. The reversal of 163815328 is 823518361.

163815328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141800464 + 22014864 = 11908^2 + 4692^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2559583 + ... + 2559646.

Almost surely, 2^163815328 is an apocalyptic number.

It is an amenable number.

163815328 is a deficient number, since it is larger than the sum of its proper divisors (158696162).

163815328 is an equidigital number, since it uses as much as digits as its factorization.

163815328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119239 (or 5119231 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 163815328 is about 12799.0362137155. The cubic root of 163815328 is about 547.1648350691.

The spelling of 163815328 in words is "one hundred sixty-three million, eight hundred fifteen thousand, three hundred twenty-eight".