2278109903 has 2 divisors, whose sum is σ = 2278109904. Its totient is φ = 2278109902.

The previous prime is 2278109863. The next prime is 2278109921. The reversal of 2278109903 is 3099018722.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2278109903 - 2¹⁶ = 2278044367 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278109923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139054951 + 1139054952.

It is an arithmetic number, because the mean of its divisors is an integer number (1139054952).

Almost surely, 2^2278109903 is an apocalyptic number.

2278109903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278109903 is an equidigital number, since it uses as much as digits as its factorization.

2278109903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 2278109903 is about 47729.5495788510. The cubic root of 2278109903 is about 1315.8050755954.

The spelling of 2278109903 in words is "two billion, two hundred seventy-eight million, one hundred nine thousand, nine hundred three".