993638732 has 12 divisors (see below), whose sum is σ = 1814470896. Its totient is φ = 475218480.

The previous prime is 993638689. The next prime is 993638749. The reversal of 993638732 is 237836399.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5400119 + ... + 5400302.

It is an arithmetic number, because the mean of its divisors is an integer number (151205908).

Almost surely, 2^993638732 is an apocalyptic number.

993638732 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

993638732 is a deficient number, since it is larger than the sum of its proper divisors (820832164).

993638732 is a wasteful number, since it uses less digits than its factorization.

993638732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10800448 (or 10800446 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 50.

The square root of 993638732 is about 31522.0356576158. The cubic root of 993638732 is about 997.8750651836.

The spelling of 993638732 in words is "nine hundred ninety-three million, six hundred thirty-eight thousand, seven hundred thirty-two".