491975308 has 36 divisors (see below), whose sum is σ = 995701896. Its totient is φ = 210211200.

The previous prime is 491975299. The next prime is 491975327. The reversal of 491975308 is 803579194.

It is a happy number.

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, 606223 + ... + 607033.

It is an arithmetic number, because the mean of its divisors is an integer number (27658386).

Almost surely, 2^491975308 is an apocalyptic number.

It is an amenable number.

491975308 is an abundant number, since it is smaller than the sum of its proper divisors (503726588).

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

491975308 is a wasteful number, since it uses less digits than its factorization.

491975308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 491975308 is about 22180.5164051697. The cubic root of 491975308 is about 789.4314704580.

The spelling of 491975308 in words is "four hundred ninety-one million, nine hundred seventy-five thousand, three hundred eight".