491174428841 has 2 divisors, whose sum is σ = 491174428842. Its totient is φ = 491174428840.

The previous prime is 491174428777. The next prime is 491174428883. The reversal of 491174428841 is 148824471194.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450287971225 + 40886457616 = 671035^2 + 202204^2 .

It is a cyclic number.

It is not a de Polignac number, because 491174428841 - 2⁶ = 491174428777 is a prime.

It is not a weakly prime, because it can be changed into another prime (491174428541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245587214420 + 245587214421.

It is an arithmetic number, because the mean of its divisors is an integer number (245587214421).

Almost surely, 2^491174428841 is an apocalyptic number.

It is an amenable number.

491174428841 is a deficient number, since it is larger than the sum of its proper divisors (1).

491174428841 is an equidigital number, since it uses as much as digits as its factorization.

491174428841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 53.

The spelling of 491174428841 in words is "four hundred ninety-one billion, one hundred seventy-four million, four hundred twenty-eight thousand, eight hundred forty-one".