2165232089 has 2 divisors, whose sum is σ = 2165232090. Its totient is φ = 2165232088.

The previous prime is 2165231989. The next prime is 2165232127. The reversal of 2165232089 is 9802325612.

It is an a-pointer prime, because the next prime (2165232127) can be obtained adding 2165232089 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1963819225 + 201412864 = 44315^2 + 14192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2165232089 is a prime.

It is not a weakly prime, because it can be changed into another prime (2165234089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082616044 + 1082616045.

It is an arithmetic number, because the mean of its divisors is an integer number (1082616045).

Almost surely, 2^2165232089 is an apocalyptic number.

It is an amenable number.

2165232089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165232089 is an equidigital number, since it uses as much as digits as its factorization.

2165232089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2165232089 is about 46532.0544248801. The cubic root of 2165232089 is about 1293.7036940991.

The spelling of 2165232089 in words is "two billion, one hundred sixty-five million, two hundred thirty-two thousand, eighty-nine".