2165713855 has 16 divisors (see below), whose sum is σ = 2622551040. Its totient is φ = 1716809472.

The previous prime is 2165713853. The next prime is 2165713867. The reversal of 2165713855 is 5583175612.

It is a happy number.

2165713855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2165713855 - 2¹ = 2165713853 is a prime.

It is a super-2 number, since 2×2165713855² = 9380633003477922050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165713853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695041 + ... + 698149.

It is an arithmetic number, because the mean of its divisors is an integer number (163909440).

Almost surely, 2^2165713855 is an apocalyptic number.

2165713855 is a deficient number, since it is larger than the sum of its proper divisors (456837185).

2165713855 is a wasteful number, since it uses less digits than its factorization.

2165713855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338.

The product of its digits is 252000, while the sum is 43.

The square root of 2165713855 is about 46537.2308479995. The cubic root of 2165713855 is about 1293.7996370447.

The spelling of 2165713855 in words is "two billion, one hundred sixty-five million, seven hundred thirteen thousand, eight hundred fifty-five".