2146704689 has 2 divisors, whose sum is σ = 2146704690. Its totient is φ = 2146704688.

The previous prime is 2146704661. The next prime is 2146704713. The reversal of 2146704689 is 9864076412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2119037089 + 27667600 = 46033^2 + 5260^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146704689 - 2⁸ = 2146704433 is a prime.

It is not a weakly prime, because it can be changed into another prime (2146704629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073352344 + 1073352345.

It is an arithmetic number, because the mean of its divisors is an integer number (1073352345).

Almost surely, 2^2146704689 is an apocalyptic number.

It is an amenable number.

2146704689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146704689 is an equidigital number, since it uses as much as digits as its factorization.

2146704689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 2146704689 is about 46332.5445988023. The cubic root of 2146704689 is about 1290.0031426320.

The spelling of 2146704689 in words is "two billion, one hundred forty-six million, seven hundred four thousand, six hundred eighty-nine".