491357107 has 2 divisors, whose sum is σ = 491357108. Its totient is φ = 491357106.

The previous prime is 491357047. The next prime is 491357123. The reversal of 491357107 is 701753194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491357107 - 2⁷ = 491356979 is a prime.

It is not a weakly prime, because it can be changed into another prime (491357147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245678553 + 245678554.

It is an arithmetic number, because the mean of its divisors is an integer number (245678554).

Almost surely, 2^491357107 is an apocalyptic number.

491357107 is a deficient number, since it is larger than the sum of its proper divisors (1).

491357107 is an equidigital number, since it uses as much as digits as its factorization.

491357107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 491357107 is about 22166.5763481869. The cubic root of 491357107 is about 789.1006734494.

The spelling of 491357107 in words is "four hundred ninety-one million, three hundred fifty-seven thousand, one hundred seven".