164111309 has 2 divisors, whose sum is σ = 164111310. Its totient is φ = 164111308.

The previous prime is 164111291. The next prime is 164111347. The reversal of 164111309 is 903111461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163763209 + 348100 = 12797^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 164111309 - 2⁸ = 164111053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164111359) 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, 82055654 + 82055655.

It is an arithmetic number, because the mean of its divisors is an integer number (82055655).

Almost surely, 2^164111309 is an apocalyptic number.

It is an amenable number.

164111309 is a deficient number, since it is larger than the sum of its proper divisors (1).

164111309 is an equidigital number, since it uses as much as digits as its factorization.

164111309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 164111309 is about 12810.5936240285. The cubic root of 164111309 is about 547.4941753444.

The spelling of 164111309 in words is "one hundred sixty-four million, one hundred eleven thousand, three hundred nine".