2206450165 has 4 divisors (see below), whose sum is σ = 2647740204. Its totient is φ = 1765160128.

The previous prime is 2206450163. The next prime is 2206450189. The reversal of 2206450165 is 5610546022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5610546022 = 2 ⋅2805273011.

It can be written as a sum of positive squares in 2 ways, for example, as 733272241 + 1473177924 = 27079^2 + 38382^2 .

It is a cyclic number.

It is not a de Polignac number, because 2206450165 - 2¹ = 2206450163 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206450163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220645012 + ... + 220645021.

It is an arithmetic number, because the mean of its divisors is an integer number (661935051).

Almost surely, 2^2206450165 is an apocalyptic number.

It is an amenable number.

2206450165 is a deficient number, since it is larger than the sum of its proper divisors (441290039).

2206450165 is an equidigital number, since it uses as much as digits as its factorization.

2206450165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441290038.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 2206450165 is about 46972.8662634079. The cubic root of 2206450165 is about 1301.8612717269.

Adding to 2206450165 its reverse (5610546022), we get a palindrome (7816996187).

The spelling of 2206450165 in words is "two billion, two hundred six million, four hundred fifty thousand, one hundred sixty-five".