918631328 has 12 divisors (see below), whose sum is σ = 1808555490. Its totient is φ = 459315648.

The previous prime is 918631327. The next prime is 918631331. The reversal of 918631328 is 823136819.

It can be written as a sum of positive squares in only one way, i.e., 812706064 + 105925264 = 28508^2 + 10292^2 .

It is not an unprimeable number, because it can be changed into a prime (918631321) by changing a digit.

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 as a sum of consecutive naturals, namely, 14353583 + ... + 14353646.

Almost surely, 2^918631328 is an apocalyptic number.

It is an amenable number.

918631328 is a deficient number, since it is larger than the sum of its proper divisors (889924162).

918631328 is a wasteful number, since it uses less digits than its factorization.

918631328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28707239 (or 28707231 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 918631328 is about 30308.9314889192. The cubic root of 918631328 is about 972.1062842790.

The spelling of 918631328 in words is "nine hundred eighteen million, six hundred thirty-one thousand, three hundred twenty-eight".