2798656543 has 2 divisors, whose sum is σ = 2798656544. Its totient is φ = 2798656542.

The previous prime is 2798656517. The next prime is 2798656589. The reversal of 2798656543 is 3456568972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2798656543 - 2²⁵ = 2765102111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2798656643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1399328271 + 1399328272.

It is an arithmetic number, because the mean of its divisors is an integer number (1399328272).

Almost surely, 2^2798656543 is an apocalyptic number.

2798656543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2798656543 is an equidigital number, since it uses as much as digits as its factorization.

2798656543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 55.

The square root of 2798656543 is about 52902.3302227794. The cubic root of 2798656543 is about 1409.2342879024.

The spelling of 2798656543 in words is "two billion, seven hundred ninety-eight million, six hundred fifty-six thousand, five hundred forty-three".