490944518291 has 2 divisors, whose sum is σ = 490944518292. Its totient is φ = 490944518290.

The previous prime is 490944518269. The next prime is 490944518293. The reversal of 490944518291 is 192815449094.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490944518291 is a prime.

Together with 490944518293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (490944518293) 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 as a sum of consecutive naturals, namely, 245472259145 + 245472259146.

It is an arithmetic number, because the mean of its divisors is an integer number (245472259146).

Almost surely, 2^490944518291 is an apocalyptic number.

490944518291 is a deficient number, since it is larger than the sum of its proper divisors (1).

490944518291 is an equidigital number, since it uses as much as digits as its factorization.

490944518291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 490944518291 in words is "four hundred ninety billion, nine hundred forty-four million, five hundred eighteen thousand, two hundred ninety-one".