164823913 has 2 divisors, whose sum is σ = 164823914. Its totient is φ = 164823912.

The previous prime is 164823889. The next prime is 164823929. The reversal of 164823913 is 319328461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164788569 + 35344 = 12837^2 + 188^2 .

It is a cyclic number.

It is not a de Polignac number, because 164823913 - 2⁹ = 164823401 is a prime.

It is not a weakly prime, because it can be changed into another prime (164820913) 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, 82411956 + 82411957.

It is an arithmetic number, because the mean of its divisors is an integer number (82411957).

Almost surely, 2^164823913 is an apocalyptic number.

It is an amenable number.

164823913 is a deficient number, since it is larger than the sum of its proper divisors (1).

164823913 is an equidigital number, since it uses as much as digits as its factorization.

164823913 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 164823913 is about 12838.3765718256. The cubic root of 164823913 is about 548.2854740510.

The spelling of 164823913 in words is "one hundred sixty-four million, eight hundred twenty-three thousand, nine hundred thirteen".