2165116535 has 16 divisors (see below), whose sum is σ = 2614118400. Its totient is φ = 1721471136.

The previous prime is 2165116511. The next prime is 2165116553. The reversal of 2165116535 is 5356115612.

It is a cyclic number.

It is not a de Polignac number, because 2165116535 - 2¹⁴ = 2165100151 is a prime.

It is a super-2 number, since 2×2165116535² = 9375459220260812450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2165116495 and 2165116504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738242 + ... + 741168.

It is an arithmetic number, because the mean of its divisors is an integer number (163382400).

Almost surely, 2^2165116535 is an apocalyptic number.

2165116535 is a deficient number, since it is larger than the sum of its proper divisors (449001865).

2165116535 is a wasteful number, since it uses less digits than its factorization.

2165116535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790.

The product of its digits is 27000, while the sum is 35.

The square root of 2165116535 is about 46530.8127481135. The cubic root of 2165116535 is about 1293.6806795845.

The spelling of 2165116535 in words is "two billion, one hundred sixty-five million, one hundred sixteen thousand, five hundred thirty-five".