164328193 has 2 divisors, whose sum is σ = 164328194. Its totient is φ = 164328192.

The previous prime is 164328149. The next prime is 164328217. The reversal of 164328193 is 391823461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134374464 + 29953729 = 11592^2 + 5473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164328193 is a prime.

It is not a weakly prime, because it can be changed into another prime (164328133) 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, 82164096 + 82164097.

It is an arithmetic number, because the mean of its divisors is an integer number (82164097).

Almost surely, 2^164328193 is an apocalyptic number.

It is an amenable number.

164328193 is a deficient number, since it is larger than the sum of its proper divisors (1).

164328193 is an equidigital number, since it uses as much as digits as its factorization.

164328193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 164328193 is about 12819.0558544692. The cubic root of 164328193 is about 547.7352524870.

The spelling of 164328193 in words is "one hundred sixty-four million, three hundred twenty-eight thousand, one hundred ninety-three".