2798515799 has 2 divisors, whose sum is σ = 2798515800. Its totient is φ = 2798515798.

The previous prime is 2798515763. The next prime is 2798515807. The reversal of 2798515799 is 9975158972.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2798515799 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 (2798515729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1399257899 + 1399257900.

It is an arithmetic number, because the mean of its divisors is an integer number (1399257900).

Almost surely, 2^2798515799 is an apocalyptic number.

2798515799 is a deficient number, since it is larger than the sum of its proper divisors (1).

2798515799 is an equidigital number, since it uses as much as digits as its factorization.

2798515799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14288400, while the sum is 62.

The square root of 2798515799 is about 52900.9999810968. Note that the first 4 decimals coincide. The cubic root of 2798515799 is about 1409.2106641157.

The spelling of 2798515799 in words is "two billion, seven hundred ninety-eight million, five hundred fifteen thousand, seven hundred ninety-nine".