491383635492 has 24 divisors (see below), whose sum is σ = 1146577594176. Its totient is φ = 163792291168.

The previous prime is 491383635487. The next prime is 491383635503. The reversal of 491383635492 is 294536383194.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789538 + ... + 1267334.

It is an arithmetic number, because the mean of its divisors is an integer number (47774066424).

Almost surely, 2^491383635492 is an apocalyptic number.

It is an amenable number.

491383635492 is an abundant number, since it is smaller than the sum of its proper divisors (655193958684).

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

491383635492 is a wasteful number, since it uses less digits than its factorization.

491383635492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563507 (or 563505 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 57.

The spelling of 491383635492 in words is "four hundred ninety-one billion, three hundred eighty-three million, six hundred thirty-five thousand, four hundred ninety-two".