491318912 has 32 divisors (see below), whose sum is σ = 1118629920. Its totient is φ = 210564864.

The previous prime is 491318869. The next prime is 491318923. The reversal of 491318912 is 219813194.

It is a tau number, because it is divible by the number of its divisors (32).

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, 273278 + ... + 275069.

It is an arithmetic number, because the mean of its divisors is an integer number (34957185).

Almost surely, 2^491318912 is an apocalyptic number.

It is an amenable number.

491318912 is an abundant number, since it is smaller than the sum of its proper divisors (627311008).

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

491318912 is an equidigital number, since it uses as much as digits as its factorization.

491318912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548368 (or 548356 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 491318912 is about 22165.7147865797. The cubic root of 491318912 is about 789.0802263510.

The spelling of 491318912 in words is "four hundred ninety-one million, three hundred eighteen thousand, nine hundred twelve".