2165713867 has 2 divisors, whose sum is σ = 2165713868. Its totient is φ = 2165713866.

The previous prime is 2165713853. The next prime is 2165713873. The reversal of 2165713867 is 7683175612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2165713867 - 2¹⁵ = 2165681099 is a prime.

It is not a weakly prime, because it can be changed into another prime (2165713967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082856933 + 1082856934.

It is an arithmetic number, because the mean of its divisors is an integer number (1082856934).

Almost surely, 2^2165713867 is an apocalyptic number.

2165713867 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165713867 is an equidigital number, since it uses as much as digits as its factorization.

2165713867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 2165713867 is about 46537.2309769286. The cubic root of 2165713867 is about 1293.7996394343.

The spelling of 2165713867 in words is "two billion, one hundred sixty-five million, seven hundred thirteen thousand, eight hundred sixty-seven".