491585268 has 24 divisors (see below), whose sum is σ = 1152474400. Its totient is φ = 163084320.

The previous prime is 491585249. The next prime is 491585273. The reversal of 491585268 is 862585194.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94543 + ... + 99606.

Almost surely, 2^491585268 is an apocalyptic number.

It is an amenable number.

491585268 is an abundant number, since it is smaller than the sum of its proper divisors (660889132).

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

491585268 is a wasteful number, since it uses less digits than its factorization.

491585268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194367 (or 194365 counting only the distinct ones).

The product of its digits is 691200, while the sum is 48.

The square root of 491585268 is about 22171.7222605733. The cubic root of 491585268 is about 789.2227938217. Note that the first 3 decimals are identical.

The spelling of 491585268 in words is "four hundred ninety-one million, five hundred eighty-five thousand, two hundred sixty-eight".