2165713853 has 2 divisors, whose sum is σ = 2165713854. Its totient is φ = 2165713852.

The previous prime is 2165713843. The next prime is 2165713867. The reversal of 2165713853 is 3583175612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214731609 + 950982244 = 34853^2 + 30838^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165713853 - 2²⁴ = 2148936637 is a prime.

It is a super-2 number, since 2×2165713853² = 9380632986152211218, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2165713853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165713843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082856926 + 1082856927.

It is an arithmetic number, because the mean of its divisors is an integer number (1082856927).

Almost surely, 2^2165713853 is an apocalyptic number.

It is an amenable number.

2165713853 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165713853 is an equidigital number, since it uses as much as digits as its factorization.

2165713853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 2165713853 is about 46537.2308265114. The cubic root of 2165713853 is about 1293.7996366465.

The spelling of 2165713853 in words is "two billion, one hundred sixty-five million, seven hundred thirteen thousand, eight hundred fifty-three".