2277782869 has 2 divisors, whose sum is σ = 2277782870. Its totient is φ = 2277782868.

The previous prime is 2277782831. The next prime is 2277782929. The reversal of 2277782869 is 9682877722.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1469802244 + 807980625 = 38338^2 + 28425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2277782869 - 2²¹ = 2275685717 is a prime.

It is a super-2 number, since 2×2277782869² = 10376589596619742322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2277785869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1138891434 + 1138891435.

It is an arithmetic number, because the mean of its divisors is an integer number (1138891435).

Almost surely, 2^2277782869 is an apocalyptic number.

It is an amenable number.

2277782869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2277782869 is an equidigital number, since it uses as much as digits as its factorization.

2277782869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 58.

The square root of 2277782869 is about 47726.1235488490. The cubic root of 2277782869 is about 1315.7421091293.

The spelling of 2277782869 in words is "two billion, two hundred seventy-seven million, seven hundred eighty-two thousand, eight hundred sixty-nine".