491187832 has 8 divisors (see below), whose sum is σ = 920977200. Its totient is φ = 245593912.

The previous prime is 491187811. The next prime is 491187863. The reversal of 491187832 is 238781194.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30699232 + ... + 30699247.

It is an arithmetic number, because the mean of its divisors is an integer number (115122150).

Almost surely, 2^491187832 is an apocalyptic number.

It is an amenable number.

491187832 is a deficient number, since it is larger than the sum of its proper divisors (429789368).

491187832 is a wasteful number, since it uses less digits than its factorization.

491187832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61398485 (or 61398481 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 491187832 is about 22162.7577706386. The cubic root of 491187832 is about 789.0100466550.

The spelling of 491187832 in words is "four hundred ninety-one million, one hundred eighty-seven thousand, eight hundred thirty-two".