6444166159 has 2 divisors, whose sum is σ = 6444166160. Its totient is φ = 6444166158.

The previous prime is 6444166153. The next prime is 6444166163. The reversal of 6444166159 is 9516614446.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6444166159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6444166153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222083079 + 3222083080.

It is an arithmetic number, because the mean of its divisors is an integer number (3222083080).

Almost surely, 2^6444166159 is an apocalyptic number.

6444166159 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444166159 is an equidigital number, since it uses as much as digits as its factorization.

6444166159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 46.

The square root of 6444166159 is about 80275.5638971163. The cubic root of 6444166159 is about 1860.8966038969.

The spelling of 6444166159 in words is "six billion, four hundred forty-four million, one hundred sixty-six thousand, one hundred fifty-nine".