2277772769 has 2 divisors, whose sum is σ = 2277772770. Its totient is φ = 2277772768.

The previous prime is 2277772733. The next prime is 2277772807. The reversal of 2277772769 is 9672777722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1805145169 + 472627600 = 42487^2 + 21740^2 .

It is a cyclic number.

It is not a de Polignac number, because 2277772769 - 2¹⁶ = 2277707233 is a prime.

It is a super-2 number, since 2×2277772769² = 10376497574395854722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2277772069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1138886384 + 1138886385.

It is an arithmetic number, because the mean of its divisors is an integer number (1138886385).

Almost surely, 2^2277772769 is an apocalyptic number.

It is an amenable number.

2277772769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2277772769 is an equidigital number, since it uses as much as digits as its factorization.

2277772769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7260624, while the sum is 56.

The square root of 2277772769 is about 47726.0177366602. The cubic root of 2277772769 is about 1315.7401643998.

The spelling of 2277772769 in words is "two billion, two hundred seventy-seven million, seven hundred seventy-two thousand, seven hundred sixty-nine".