2162105205 has 16 divisors (see below), whose sum is σ = 3725473920. Its totient is φ = 1064420928.

The previous prime is 2162105201. The next prime is 2162105207. The reversal of 2162105205 is 5025012612.

It is a happy number.

It is not a de Polignac number, because 2162105205 - 2² = 2162105201 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162105201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5543665 + ... + 5544054.

It is an arithmetic number, because the mean of its divisors is an integer number (232842120).

Almost surely, 2^2162105205 is an apocalyptic number.

It is an amenable number.

2162105205 is a deficient number, since it is larger than the sum of its proper divisors (1563368715).

2162105205 is a wasteful number, since it uses less digits than its factorization.

2162105205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11087740.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2162105205 is about 46498.4430384502. The cubic root of 2162105205 is about 1293.0806338329.

Adding to 2162105205 its reverse (5025012612), we get a palindrome (7187117817).

The spelling of 2162105205 in words is "two billion, one hundred sixty-two million, one hundred five thousand, two hundred five".