491242883 has 2 divisors, whose sum is σ = 491242884. Its totient is φ = 491242882.

The previous prime is 491242877. The next prime is 491242933. The reversal of 491242883 is 388242194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491242883 - 2¹⁸ = 490980739 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 491242883.

It is not a weakly prime, because it can be changed into another prime (491242813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245621441 + 245621442.

It is an arithmetic number, because the mean of its divisors is an integer number (245621442).

Almost surely, 2^491242883 is an apocalyptic number.

491242883 is a deficient number, since it is larger than the sum of its proper divisors (1).

491242883 is an equidigital number, since it uses as much as digits as its factorization.

491242883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 41.

The square root of 491242883 is about 22163.9997067316. Note that the first 3 decimals coincide. The cubic root of 491242883 is about 789.0395222558.

The spelling of 491242883 in words is "four hundred ninety-one million, two hundred forty-two thousand, eight hundred eighty-three".