2798310881 has 2 divisors, whose sum is σ = 2798310882. Its totient is φ = 2798310880.

The previous prime is 2798310877. The next prime is 2798310913. The reversal of 2798310881 is 1880138972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2089952656 + 708358225 = 45716^2 + 26615^2 .

It is a cyclic number.

It is not a de Polignac number, because 2798310881 - 2² = 2798310877 is a prime.

It is a super-2 number, since 2×2798310881² = 15661087573445992322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2798310181) 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, 1399155440 + 1399155441.

It is an arithmetic number, because the mean of its divisors is an integer number (1399155441).

Almost surely, 2^2798310881 is an apocalyptic number.

It is an amenable number.

2798310881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2798310881 is an equidigital number, since it uses as much as digits as its factorization.

2798310881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 2798310881 is about 52899.0631391521. The cubic root of 2798310881 is about 1409.1762673497.

The spelling of 2798310881 in words is "two billion, seven hundred ninety-eight million, three hundred ten thousand, eight hundred eighty-one".