162044809 has 2 divisors, whose sum is σ = 162044810. Its totient is φ = 162044808.

The previous prime is 162044807. The next prime is 162044849. The reversal of 162044809 is 908440261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156625225 + 5419584 = 12515^2 + 2328^2 .

It is a cyclic number.

It is not a de Polignac number, because 162044809 - 2¹ = 162044807 is a prime.

Together with 162044807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (162044803) 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, 81022404 + 81022405.

It is an arithmetic number, because the mean of its divisors is an integer number (81022405).

Almost surely, 2^162044809 is an apocalyptic number.

It is an amenable number.

162044809 is a deficient number, since it is larger than the sum of its proper divisors (1).

162044809 is an equidigital number, since it uses as much as digits as its factorization.

162044809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 162044809 is about 12729.6822034173. The cubic root of 162044809 is about 545.1864345475.

The spelling of 162044809 in words is "one hundred sixty-two million, forty-four thousand, eight hundred nine".