2163835789 has 2 divisors, whose sum is σ = 2163835790. Its totient is φ = 2163835788.

The previous prime is 2163835787. The next prime is 2163835799. The reversal of 2163835789 is 9875383612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2149713225 + 14122564 = 46365^2 + 3758^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163835789 - 2¹ = 2163835787 is a prime.

Together with 2163835787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163835781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081917894 + 1081917895.

It is an arithmetic number, because the mean of its divisors is an integer number (1081917895).

Almost surely, 2^2163835789 is an apocalyptic number.

It is an amenable number.

2163835789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163835789 is an equidigital number, since it uses as much as digits as its factorization.

2163835789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The square root of 2163835789 is about 46517.0483693882. The cubic root of 2163835789 is about 1293.4255427151.

The spelling of 2163835789 in words is "two billion, one hundred sixty-three million, eight hundred thirty-five thousand, seven hundred eighty-nine".