493474085809 has 2 divisors, whose sum is σ = 493474085810. Its totient is φ = 493474085808.

The previous prime is 493474085803. The next prime is 493474085813. The reversal of 493474085809 is 908580474394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255009850225 + 238464235584 = 504985^2 + 488328^2 .

It is a cyclic number.

It is not a de Polignac number, because 493474085809 - 2³ = 493474085801 is a prime.

It is not a weakly prime, because it can be changed into another prime (493474085801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246737042904 + 246737042905.

It is an arithmetic number, because the mean of its divisors is an integer number (246737042905).

Almost surely, 2^493474085809 is an apocalyptic number.

It is an amenable number.

493474085809 is a deficient number, since it is larger than the sum of its proper divisors (1).

493474085809 is an equidigital number, since it uses as much as digits as its factorization.

493474085809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 493474085809 in words is "four hundred ninety-three billion, four hundred seventy-four million, eighty-five thousand, eight hundred nine".