2049165 has 32 divisors (see below), whose sum is σ = 3738240. Its totient is φ = 1064448.

The previous prime is 2049161. The next prime is 2049167. The reversal of 2049165 is 5619402.

It is not a de Polignac number, because 2049165 - 2² = 2049161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5629 + ... + 5981.

It is an arithmetic number, because the mean of its divisors is an integer number (116820).

2^2049165 is an apocalyptic number.

It is an amenable number.

2049165 is a deficient number, since it is larger than the sum of its proper divisors (1689075).

2049165 is a wasteful number, since it uses less digits than its factorization.

2049165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2049165 is about 1431.4904819802. The cubic root of 2049165 is about 127.0161593095.

Adding to 2049165 its product of nonzero digits (2160), we get a triangular number (2051325 = T₂₀₂₅).

The spelling of 2049165 in words is "two million, forty-nine thousand, one hundred sixty-five".