491782908 has 24 divisors (see below), whose sum is σ = 1156256640. Its totient is φ = 162675760.

The previous prime is 491782903. The next prime is 491782927. The reversal of 491782908 is 809287194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491782901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154848 + ... + 157991.

It is an arithmetic number, because the mean of its divisors is an integer number (48177360).

Almost surely, 2^491782908 is an apocalyptic number.

It is an amenable number.

491782908 is an abundant number, since it is smaller than the sum of its proper divisors (664473732).

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

491782908 is a wasteful number, since it uses less digits than its factorization.

491782908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312977 (or 312975 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 491782908 is about 22176.1788412702. The cubic root of 491782908 is about 789.3285476646.

The spelling of 491782908 in words is "four hundred ninety-one million, seven hundred eighty-two thousand, nine hundred eight".