6498856289 has 2 divisors, whose sum is σ = 6498856290. Its totient is φ = 6498856288.

The previous prime is 6498856279. The next prime is 6498856327. The reversal of 6498856289 is 9826588946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4466649889 + 2032206400 = 66833^2 + 45080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6498856289 is a prime.

It is not a weakly prime, because it can be changed into another prime (6498856279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3249428144 + 3249428145.

It is an arithmetic number, because the mean of its divisors is an integer number (3249428145).

Almost surely, 2^6498856289 is an apocalyptic number.

It is an amenable number.

6498856289 is a deficient number, since it is larger than the sum of its proper divisors (1).

6498856289 is an equidigital number, since it uses as much as digits as its factorization.

6498856289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59719680, while the sum is 65.

The square root of 6498856289 is about 80615.4841764285. The cubic root of 6498856289 is about 1866.1461126529.

The spelling of 6498856289 in words is "six billion, four hundred ninety-eight million, eight hundred fifty-six thousand, two hundred eighty-nine".