2165013 has 12 divisors (see below), whose sum is σ = 3263520. Its totient is φ = 1380456.

The previous prime is 2164991. The next prime is 2165017. The reversal of 2165013 is 3105612.

2165013 is a `hidden beast` number, since 2 + 1 + 650 + 13 = 666.

It is not a de Polignac number, because 2165013 - 2⁹ = 2164501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5023 + ... + 5436.

It is an arithmetic number, because the mean of its divisors is an integer number (271960).

2^2165013 is an apocalyptic number.

2165013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2165013 is a deficient number, since it is larger than the sum of its proper divisors (1098507).

2165013 is a wasteful number, since it uses less digits than its factorization.

2165013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10488 (or 10485 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2165013 is about 1471.3983145294. The cubic root of 2165013 is about 129.3660058160.

The spelling of 2165013 in words is "two million, one hundred sixty-five thousand, thirteen".