491567196 has 24 divisors (see below), whose sum is σ = 1147426560. Its totient is φ = 163793392.

The previous prime is 491567179. The next prime is 491567227. The reversal of 491567196 is 691765194.

It is a happy number.

It is a congruent number.

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, 34045 + ... + 46283.

It is an arithmetic number, because the mean of its divisors is an integer number (47809440).

Almost surely, 2^491567196 is an apocalyptic number.

It is an amenable number.

491567196 is an abundant number, since it is smaller than the sum of its proper divisors (655859364).

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

491567196 is a wasteful number, since it uses less digits than its factorization.

491567196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15593 (or 15591 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 491567196 is about 22171.3147106797. The cubic root of 491567196 is about 789.2131223838.

The spelling of 491567196 in words is "four hundred ninety-one million, five hundred sixty-seven thousand, one hundred ninety-six".