2265779165 has 16 divisors (see below), whose sum is σ = 3082195200. Its totient is φ = 1585127232.

The previous prime is 2265779161. The next prime is 2265779189. The reversal of 2265779165 is 5619775622.

It is a happy number.

2265779165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2265779165 - 2² = 2265779161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265779161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 916085 + ... + 918554.

It is an arithmetic number, because the mean of its divisors is an integer number (192637200).

Almost surely, 2^2265779165 is an apocalyptic number.

It is an amenable number.

2265779165 is a deficient number, since it is larger than the sum of its proper divisors (816416035).

2265779165 is a wasteful number, since it uses less digits than its factorization.

2265779165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834676.

The product of its digits is 1587600, while the sum is 50.

The square root of 2265779165 is about 47600.2013125995. The cubic root of 2265779165 is about 1313.4267575855.

The spelling of 2265779165 in words is "two billion, two hundred sixty-five million, seven hundred seventy-nine thousand, one hundred sixty-five".