2165105276 has 12 divisors (see below), whose sum is σ = 3953670672. Its totient is φ = 1035485088.

The previous prime is 2165105273. The next prime is 2165105291. The reversal of 2165105276 is 6725015612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165105273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11766785 + ... + 11766968.

It is an arithmetic number, because the mean of its divisors is an integer number (329472556).

Almost surely, 2^2165105276 is an apocalyptic number.

It is an amenable number.

2165105276 is a deficient number, since it is larger than the sum of its proper divisors (1788565396).

2165105276 is a wasteful number, since it uses less digits than its factorization.

2165105276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23533780 (or 23533778 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 2165105276 is about 46530.6917636091. The cubic root of 2165105276 is about 1293.6784371223.

The spelling of 2165105276 in words is "two billion, one hundred sixty-five million, one hundred five thousand, two hundred seventy-six".