162836809 has 2 divisors, whose sum is σ = 162836810. Its totient is φ = 162836808.

The previous prime is 162836797. The next prime is 162836813. The reversal of 162836809 is 908638261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146410000 + 16426809 = 12100^2 + 4053^2 .

It is an emirp because it is prime and its reverse (908638261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162836809 - 2⁵ = 162836777 is a prime.

It is not a weakly prime, because it can be changed into another prime (162836819) 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, 81418404 + 81418405.

It is an arithmetic number, because the mean of its divisors is an integer number (81418405).

Almost surely, 2^162836809 is an apocalyptic number.

It is an amenable number.

162836809 is a deficient number, since it is larger than the sum of its proper divisors (1).

162836809 is an equidigital number, since it uses as much as digits as its factorization.

162836809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 162836809 is about 12760.7526815623. The cubic root of 162836809 is about 546.0731977076.

The spelling of 162836809 in words is "one hundred sixty-two million, eight hundred thirty-six thousand, eight hundred nine".