516164809 has 2 divisors, whose sum is σ = 516164810. Its totient is φ = 516164808.

The previous prime is 516164767. The next prime is 516164833. The reversal of 516164809 is 908461615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354493584 + 161671225 = 18828^2 + 12715^2 .

It is a cyclic number.

It is not a de Polignac number, because 516164809 - 2⁷ = 516164681 is a prime.

It is a super-2 number, since 2×516164809² = 532852220100012962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (516164309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258082404 + 258082405.

It is an arithmetic number, because the mean of its divisors is an integer number (258082405).

Almost surely, 2^516164809 is an apocalyptic number.

It is an amenable number.

516164809 is a deficient number, since it is larger than the sum of its proper divisors (1).

516164809 is an equidigital number, since it uses as much as digits as its factorization.

516164809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 516164809 is about 22719.2607494170. The cubic root of 516164809 is about 802.1633161601.

The spelling of 516164809 in words is "five hundred sixteen million, one hundred sixty-four thousand, eight hundred nine".