491502830 has 192 divisors, whose sum is σ = 1213470720. Its totient is φ = 141523200.

The previous prime is 491502779. The next prime is 491502833. The reversal of 491502830 is 38205194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491502833) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 3751865 + ... + 3751995.

It is an arithmetic number, because the mean of its divisors is an integer number (6320160).

Almost surely, 2^491502830 is an apocalyptic number.

491502830 is an abundant number, since it is smaller than the sum of its proper divisors (721967890).

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

491502830 is a wasteful number, since it uses less digits than its factorization.

491502830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 491502830 is about 22169.8631028701. The cubic root of 491502830 is about 789.1786742557.

The spelling of 491502830 in words is "four hundred ninety-one million, five hundred two thousand, eight hundred thirty".