491650290 has 32 divisors (see below), whose sum is σ = 1311068160. Its totient is φ = 131106672.

The previous prime is 491650279. The next prime is 491650331. The reversal of 491650290 is 92056194.

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 15 ways as a sum of consecutive naturals, for example, 910194 + ... + 910733.

It is an arithmetic number, because the mean of its divisors is an integer number (40970880).

Almost surely, 2^491650290 is an apocalyptic number.

491650290 is an abundant number, since it is smaller than the sum of its proper divisors (819417870).

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

491650290 is a wasteful number, since it uses less digits than its factorization.

491650290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820943 (or 1820937 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 491650290 is about 22173.1885393148. The cubic root of 491650290 is about 789.2575891294.

The spelling of 491650290 in words is "four hundred ninety-one million, six hundred fifty thousand, two hundred ninety".