2165074227 has 6 divisors (see below), whose sum is σ = 3127329452. Its totient is φ = 1443382812.

The previous prime is 2165074201. The next prime is 2165074231. The reversal of 2165074227 is 7224705612.

It is a happy number.

It is not a de Polignac number, because 2165074227 - 2⁷ = 2165074099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2165074191 and 2165074200.

It is not an unprimeable number, because it can be changed into a prime (2165074267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120281893 + ... + 120281910.

Almost surely, 2^2165074227 is an apocalyptic number.

2165074227 is a deficient number, since it is larger than the sum of its proper divisors (962255225).

2165074227 is a wasteful number, since it uses less digits than its factorization.

2165074227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240563809 (or 240563806 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 2165074227 is about 46530.3581224129. The cubic root of 2165074227 is about 1293.6722530329.

Adding to 2165074227 its reverse (7224705612), we get a palindrome (9389779839).

The spelling of 2165074227 in words is "two billion, one hundred sixty-five million, seventy-four thousand, two hundred twenty-seven".