491696833 has 2 divisors, whose sum is σ = 491696834. Its totient is φ = 491696832.

The previous prime is 491696819. The next prime is 491696837. The reversal of 491696833 is 338696194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 443018304 + 48678529 = 21048^2 + 6977^2 .

It is a cyclic number.

It is not a de Polignac number, because 491696833 - 2²¹ = 489599681 is a prime.

It is not a weakly prime, because it can be changed into another prime (491696837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245848416 + 245848417.

It is an arithmetic number, because the mean of its divisors is an integer number (245848417).

Almost surely, 2^491696833 is an apocalyptic number.

It is an amenable number.

491696833 is a deficient number, since it is larger than the sum of its proper divisors (1).

491696833 is an equidigital number, since it uses as much as digits as its factorization.

491696833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 491696833 is about 22174.2380477887. The cubic root of 491696833 is about 789.2824938619.

The spelling of 491696833 in words is "four hundred ninety-one million, six hundred ninety-six thousand, eight hundred thirty-three".