2278382773 has 2 divisors, whose sum is σ = 2278382774. Its totient is φ = 2278382772.

The previous prime is 2278382761. The next prime is 2278382791. The reversal of 2278382773 is 3772838722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2271189649 + 7193124 = 47657^2 + 2682^2 .

It is a cyclic number.

It is not a de Polignac number, because 2278382773 - 2⁵ = 2278382741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278382723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139191386 + 1139191387.

It is an arithmetic number, because the mean of its divisors is an integer number (1139191387).

Almost surely, 2^2278382773 is an apocalyptic number.

It is an amenable number.

2278382773 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278382773 is an equidigital number, since it uses as much as digits as its factorization.

2278382773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1580544, while the sum is 49.

The square root of 2278382773 is about 47732.4079949881. The cubic root of 2278382773 is about 1315.8576088228.

The spelling of 2278382773 in words is "two billion, two hundred seventy-eight million, three hundred eighty-two thousand, seven hundred seventy-three".