2165062205 has 4 divisors (see below), whose sum is σ = 2598074652. Its totient is φ = 1732049760.

The previous prime is 2165062199. The next prime is 2165062223. The reversal of 2165062205 is 5022605612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1344468889 + 820593316 = 36667^2 + 28646^2 .

It is not a de Polignac number, because 2165062205 - 2¹⁸ = 2164800061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 216506216 + ... + 216506225.

It is an arithmetic number, because the mean of its divisors is an integer number (649518663).

Almost surely, 2^2165062205 is an apocalyptic number.

It is an amenable number.

2165062205 is a deficient number, since it is larger than the sum of its proper divisors (433012447).

2165062205 is an equidigital number, since it uses as much as digits as its factorization.

2165062205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433012446.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2165062205 is about 46530.2289377562. The cubic root of 2165062205 is about 1293.6698585720.

Adding to 2165062205 its reverse (5022605612), we get a palindrome (7187667817).

The spelling of 2165062205 in words is "two billion, one hundred sixty-five million, sixty-two thousand, two hundred five".