2065436389 has 2 divisors, whose sum is σ = 2065436390. Its totient is φ = 2065436388.

The previous prime is 2065436353. The next prime is 2065436441. The reversal of 2065436389 is 9836345602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1975091364 + 90345025 = 44442^2 + 9505^2 .

It is a cyclic number.

It is not a de Polignac number, because 2065436389 - 2¹⁵ = 2065403621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2065434389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032718194 + 1032718195.

It is an arithmetic number, because the mean of its divisors is an integer number (1032718195).

Almost surely, 2^2065436389 is an apocalyptic number.

It is an amenable number.

2065436389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2065436389 is an equidigital number, since it uses as much as digits as its factorization.

2065436389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 46.

The square root of 2065436389 is about 45447.0723919594. The cubic root of 2065436389 is about 1273.5146386130.

The spelling of 2065436389 in words is "two billion, sixty-five million, four hundred thirty-six thousand, three hundred eighty-nine".