6349985189 has 2 divisors, whose sum is σ = 6349985190. Its totient is φ = 6349985188.

The previous prime is 6349985111. The next prime is 6349985263. The reversal of 6349985189 is 9815899436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4751344900 + 1598640289 = 68930^2 + 39983^2 .

It is a cyclic number.

It is not a de Polignac number, because 6349985189 - 2²⁴ = 6333207973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6349985489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3174992594 + 3174992595.

It is an arithmetic number, because the mean of its divisors is an integer number (3174992595).

Almost surely, 2^6349985189 is an apocalyptic number.

It is an amenable number.

6349985189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6349985189 is an equidigital number, since it uses as much as digits as its factorization.

6349985189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16796160, while the sum is 62.

The square root of 6349985189 is about 79686.7943200126. The cubic root of 6349985189 is about 1851.7864592963.

The spelling of 6349985189 in words is "six billion, three hundred forty-nine million, nine hundred eighty-five thousand, one hundred eighty-nine".