164805073 has 2 divisors, whose sum is σ = 164805074. Its totient is φ = 164805072.

The previous prime is 164805071. The next prime is 164805131. The reversal of 164805073 is 370508461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147064129 + 17740944 = 12127^2 + 4212^2 .

It is an emirp because it is prime and its reverse (370508461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164805073 - 2¹ = 164805071 is a prime.

Together with 164805071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (164805071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82402536 + 82402537.

It is an arithmetic number, because the mean of its divisors is an integer number (82402537).

Almost surely, 2^164805073 is an apocalyptic number.

It is an amenable number.

164805073 is a deficient number, since it is larger than the sum of its proper divisors (1).

164805073 is an equidigital number, since it uses as much as digits as its factorization.

164805073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 164805073 is about 12837.6428132270. The cubic root of 164805073 is about 548.2645828835.

The spelling of 164805073 in words is "one hundred sixty-four million, eight hundred five thousand, seventy-three".