491566088 has 16 divisors (see below), whose sum is σ = 992585580. Its totient is φ = 226876608.

The previous prime is 491566063. The next prime is 491566147. The reversal of 491566088 is 880665194.

It can be written as a sum of positive squares in 2 ways, for example, as 464919844 + 26646244 = 21562^2 + 5162^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2363195 + ... + 2363402.

Almost surely, 2^491566088 is an apocalyptic number.

It is an amenable number.

491566088 is an abundant number, since it is smaller than the sum of its proper divisors (501019492).

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

491566088 is a wasteful number, since it uses less digits than its factorization.

491566088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726616 (or 4726612 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 491566088 is about 22171.2897234238. The cubic root of 491566088 is about 789.2125294172.

The spelling of 491566088 in words is "four hundred ninety-one million, five hundred sixty-six thousand, eighty-eight".