491163241 has 2 divisors, whose sum is σ = 491163242. Its totient is φ = 491163240.

The previous prime is 491163223. The next prime is 491163289. The reversal of 491163241 is 142361194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420250000 + 70913241 = 20500^2 + 8421^2 .

It is a cyclic number.

It is not a de Polignac number, because 491163241 - 2⁵ = 491163209 is a prime.

It is not a weakly prime, because it can be changed into another prime (491163941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245581620 + 245581621.

It is an arithmetic number, because the mean of its divisors is an integer number (245581621).

Almost surely, 2^491163241 is an apocalyptic number.

It is an amenable number.

491163241 is a deficient number, since it is larger than the sum of its proper divisors (1).

491163241 is an equidigital number, since it uses as much as digits as its factorization.

491163241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 491163241 is about 22162.2029816532. The cubic root of 491163241 is about 788.9968793433.

The spelling of 491163241 in words is "four hundred ninety-one million, one hundred sixty-three thousand, two hundred forty-one".