6535942789 has 2 divisors, whose sum is σ = 6535942790. Its totient is φ = 6535942788.

The previous prime is 6535942727. The next prime is 6535942837. The reversal of 6535942789 is 9872495356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6505229025 + 30713764 = 80655^2 + 5542^2 .

It is a cyclic number.

It is not a de Polignac number, because 6535942789 - 2⁹ = 6535942277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6535943789) 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, 3267971394 + 3267971395.

It is an arithmetic number, because the mean of its divisors is an integer number (3267971395).

Almost surely, 2^6535942789 is an apocalyptic number.

It is an amenable number.

6535942789 is a deficient number, since it is larger than the sum of its proper divisors (1).

6535942789 is an equidigital number, since it uses as much as digits as its factorization.

6535942789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16329600, while the sum is 58.

The square root of 6535942789 is about 80845.1778957781. The cubic root of 6535942789 is about 1869.6891767987.

The spelling of 6535942789 in words is "six billion, five hundred thirty-five million, nine hundred forty-two thousand, seven hundred eighty-nine".