491732168 has 48 divisors (see below), whose sum is σ = 960906240. Its totient is φ = 235892640.

The previous prime is 491732159. The next prime is 491732173. The reversal of 491732168 is 861237194.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1283705 + ... + 1284087.

It is an arithmetic number, because the mean of its divisors is an integer number (20018880).

Almost surely, 2^491732168 is an apocalyptic number.

It is an amenable number.

491732168 is a deficient number, since it is larger than the sum of its proper divisors (469174072).

491732168 is a wasteful number, since it uses less digits than its factorization.

491732168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 583 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 491732168 is about 22175.0347914045. The cubic root of 491732168 is about 789.3014002469.

The spelling of 491732168 in words is "four hundred ninety-one million, seven hundred thirty-two thousand, one hundred sixty-eight".