4020164689 has 2 divisors, whose sum is σ = 4020164690. Its totient is φ = 4020164688.

The previous prime is 4020164671. The next prime is 4020164783. The reversal of 4020164689 is 9864610204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2529587025 + 1490577664 = 50295^2 + 38608^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020164689 - 2⁹ = 4020164177 is a prime.

It is not a weakly prime, because it can be changed into another prime (4020164669) 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, 2010082344 + 2010082345.

It is an arithmetic number, because the mean of its divisors is an integer number (2010082345).

Almost surely, 2^4020164689 is an apocalyptic number.

It is an amenable number.

4020164689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020164689 is an equidigital number, since it uses as much as digits as its factorization.

4020164689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 4020164689 is about 63404.7686613554. The cubic root of 4020164689 is about 1590.0640361589.

The spelling of 4020164689 in words is "four billion, twenty million, one hundred sixty-four thousand, six hundred eighty-nine".