491847512 has 32 divisors (see below), whose sum is σ = 1020003600. Its totient is φ = 220869504.

The previous prime is 491847481. The next prime is 491847523. The reversal of 491847512 is 215748194.

It is a self number, because there is not a number n which added to its sum of digits gives 491847512.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 60062 + ... + 67757.

Almost surely, 2^491847512 is an apocalyptic number.

It is an amenable number.

491847512 is an abundant number, since it is smaller than the sum of its proper divisors (528156088).

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

491847512 is a wasteful number, since it uses less digits than its factorization.

491847512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127875 (or 127871 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 491847512 is about 22177.6354014579. The cubic root of 491847512 is about 789.3631100347.

The spelling of 491847512 in words is "four hundred ninety-one million, eight hundred forty-seven thousand, five hundred twelve".