2049169165 has 4 divisors (see below), whose sum is σ = 2459003004. Its totient is φ = 1639335328.

The previous prime is 2049169159. The next prime is 2049169189. The reversal of 2049169165 is 5619619402.

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 347524164 + 1701645001 = 18642^2 + 41251^2 .

It is a cyclic number.

It is not a de Polignac number, because 2049169165 - 2¹¹ = 2049167117 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204916912 + ... + 204916921.

It is an arithmetic number, because the mean of its divisors is an integer number (614750751).

Almost surely, 2^2049169165 is an apocalyptic number.

It is an amenable number.

2049169165 is a deficient number, since it is larger than the sum of its proper divisors (409833839).

2049169165 is an equidigital number, since it uses as much as digits as its factorization.

2049169165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409833838.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 2049169165 is about 45267.7497231749. The cubic root of 2049169165 is about 1270.1624536436.

The spelling of 2049169165 in words is "two billion, forty-nine million, one hundred sixty-nine thousand, one hundred sixty-five".