491895312 has 20 divisors (see below), whose sum is σ = 1270729680. Its totient is φ = 163965088.

The previous prime is 491895293. The next prime is 491895343. The reversal of 491895312 is 213598194.

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, 5123862 + ... + 5123957.

It is an arithmetic number, because the mean of its divisors is an integer number (63536484).

Almost surely, 2^491895312 is an apocalyptic number.

It is an amenable number.

491895312 is an abundant number, since it is smaller than the sum of its proper divisors (778834368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491895312 is a wasteful number, since it uses less digits than its factorization.

491895312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10247830 (or 10247824 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 491895312 is about 22178.7130375051. The cubic root of 491895312 is about 789.3886805171.

The spelling of 491895312 in words is "four hundred ninety-one million, eight hundred ninety-five thousand, three hundred twelve".