2170345165 has 8 divisors (see below), whose sum is σ = 2604670488. Its totient is φ = 1736105280.

The previous prime is 2170345153. The next prime is 2170345183. The reversal of 2170345165 is 5615430712.

2170345165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 505215529 + 1665129636 = 22477^2 + 40806^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2170345165 - 2²³ = 2161956557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2170345165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70279 + ... + 96331.

It is an arithmetic number, because the mean of its divisors is an integer number (325583811).

Almost surely, 2^2170345165 is an apocalyptic number.

It is an amenable number.

2170345165 is a deficient number, since it is larger than the sum of its proper divisors (434325323).

2170345165 is a wasteful number, since it uses less digits than its factorization.

2170345165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42719.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 2170345165 is about 46586.9634661887. The cubic root of 2170345165 is about 1294.7212301761.

Adding to 2170345165 its reverse (5615430712), we get a palindrome (7785775877).

The spelling of 2170345165 in words is "two billion, one hundred seventy million, three hundred forty-five thousand, one hundred sixty-five".