491310870 has 16 divisors (see below), whose sum is σ = 1179146160. Its totient is φ = 131016224.

The previous prime is 491310839. The next prime is 491310871. The reversal of 491310870 is 78013194.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491310871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8188485 + ... + 8188544.

It is an arithmetic number, because the mean of its divisors is an integer number (73696635).

Almost surely, 2^491310870 is an apocalyptic number.

491310870 is an abundant number, since it is smaller than the sum of its proper divisors (687835290).

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

491310870 is a wasteful number, since it uses less digits than its factorization.

491310870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16377039.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 491310870 is about 22165.5333795512. The cubic root of 491310870 is about 789.0759210566.

The spelling of 491310870 in words is "four hundred ninety-one million, three hundred ten thousand, eight hundred seventy".