2278630273 has 2 divisors, whose sum is σ = 2278630274. Its totient is φ = 2278630272.

The previous prime is 2278630213. The next prime is 2278630283. The reversal of 2278630273 is 3720368722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2222933904 + 55696369 = 47148^2 + 7463^2 .

It is a cyclic number.

It is not a de Polignac number, because 2278630273 - 2⁹ = 2278629761 is a prime.

It is not a weakly prime, because it can be changed into another prime (2278630213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139315136 + 1139315137.

It is an arithmetic number, because the mean of its divisors is an integer number (1139315137).

Almost surely, 2^2278630273 is an apocalyptic number.

It is an amenable number.

2278630273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278630273 is an equidigital number, since it uses as much as digits as its factorization.

2278630273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 2278630273 is about 47735.0005027757. Note that the first 3 decimals coincide. The cubic root of 2278630273 is about 1315.9052541629.

Adding to 2278630273 its reverse (3720368722), we get a palindrome (5998998995).

The spelling of 2278630273 in words is "two billion, two hundred seventy-eight million, six hundred thirty thousand, two hundred seventy-three".