164922689 has 2 divisors, whose sum is σ = 164922690. Its totient is φ = 164922688.

The previous prime is 164922683. The next prime is 164922701. The reversal of 164922689 is 986229461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144600625 + 20322064 = 12025^2 + 4508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164922689 is a prime.

It is not a weakly prime, because it can be changed into another prime (164922683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82461344 + 82461345.

It is an arithmetic number, because the mean of its divisors is an integer number (82461345).

Almost surely, 2^164922689 is an apocalyptic number.

It is an amenable number.

164922689 is a deficient number, since it is larger than the sum of its proper divisors (1).

164922689 is an equidigital number, since it uses as much as digits as its factorization.

164922689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 47.

The square root of 164922689 is about 12842.2228994828. Note that the first 3 decimals coincide. The cubic root of 164922689 is about 548.3949780465.

The spelling of 164922689 in words is "one hundred sixty-four million, nine hundred twenty-two thousand, six hundred eighty-nine".