2165213589 has 16 divisors (see below), whose sum is σ = 3599316480. Its totient is φ = 1124786160.

The previous prime is 2165213579. The next prime is 2165213639. The reversal of 2165213589 is 9853125612.

It is not a de Polignac number, because 2165213589 - 2⁸ = 2165213333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2165213589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165213509) 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, 4686379 + ... + 4686840.

It is an arithmetic number, because the mean of its divisors is an integer number (224957280).

Almost surely, 2^2165213589 is an apocalyptic number.

It is an amenable number.

2165213589 is a deficient number, since it is larger than the sum of its proper divisors (1434102891).

2165213589 is a wasteful number, since it uses less digits than its factorization.

2165213589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9373240.

The product of its digits is 129600, while the sum is 42.

The square root of 2165213589 is about 46531.8556367571. The cubic root of 2165213589 is about 1293.7000095692.

The spelling of 2165213589 in words is "two billion, one hundred sixty-five million, two hundred thirteen thousand, five hundred eighty-nine".