6386356849 has 2 divisors, whose sum is σ = 6386356850. Its totient is φ = 6386356848.

The previous prime is 6386356831. The next prime is 6386356871. The reversal of 6386356849 is 9486536836.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5386532449 + 999824400 = 73393^2 + 31620^2 .

It is a cyclic number.

It is not a de Polignac number, because 6386356849 - 2⁹ = 6386356337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6386356793 and 6386356802.

It is not a weakly prime, because it can be changed into another prime (6386356649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3193178424 + 3193178425.

It is an arithmetic number, because the mean of its divisors is an integer number (3193178425).

Almost surely, 2^6386356849 is an apocalyptic number.

It is an amenable number.

6386356849 is a deficient number, since it is larger than the sum of its proper divisors (1).

6386356849 is an equidigital number, since it uses as much as digits as its factorization.

6386356849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22394880, while the sum is 58.

The square root of 6386356849 is about 79914.6848144945. The cubic root of 6386356849 is about 1855.3153053437.

The spelling of 6386356849 in words is "six billion, three hundred eighty-six million, three hundred fifty-six thousand, eight hundred forty-nine".