2780875913 has 2 divisors, whose sum is σ = 2780875914. Its totient is φ = 2780875912.

The previous prime is 2780875897. The next prime is 2780875961. The reversal of 2780875913 is 3195780872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1921682569 + 859193344 = 43837^2 + 29312^2 .

It is a cyclic number.

It is not a de Polignac number, because 2780875913 - 2⁴ = 2780875897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2780875613) 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, 1390437956 + 1390437957.

It is an arithmetic number, because the mean of its divisors is an integer number (1390437957).

Almost surely, 2^2780875913 is an apocalyptic number.

It is an amenable number.

2780875913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2780875913 is an equidigital number, since it uses as much as digits as its factorization.

2780875913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 2780875913 is about 52734.0109701509. The cubic root of 2780875913 is about 1406.2435283508.

The spelling of 2780875913 in words is "two billion, seven hundred eighty million, eight hundred seventy-five thousand, nine hundred thirteen".