2165104149 has 32 divisors (see below), whose sum is σ = 3248281344. Its totient is φ = 1272775680.

The previous prime is 2165104141. The next prime is 2165104177. The reversal of 2165104149 is 9414015612.

It is not a de Polignac number, because 2165104149 - 2³ = 2165104141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165104141) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1162479 + ... + 1164339.

It is an arithmetic number, because the mean of its divisors is an integer number (101508792).

Almost surely, 2^2165104149 is an apocalyptic number.

It is an amenable number.

2165104149 is a deficient number, since it is larger than the sum of its proper divisors (1083177195).

2165104149 is a wasteful number, since it uses less digits than its factorization.

2165104149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 2165104149 is about 46530.6796533212. The cubic root of 2165104149 is about 1293.6782126566.

The spelling of 2165104149 in words is "two billion, one hundred sixty-five million, one hundred four thousand, one hundred forty-nine".