6445463149 has 2 divisors, whose sum is σ = 6445463150. Its totient is φ = 6445463148.

The previous prime is 6445463137. The next prime is 6445463183. The reversal of 6445463149 is 9413645446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4513421124 + 1932042025 = 67182^2 + 43955^2 .

It is a cyclic number.

It is not a de Polignac number, because 6445463149 - 2⁵ = 6445463117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6445463099 and 6445463108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6445464149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222731574 + 3222731575.

It is an arithmetic number, because the mean of its divisors is an integer number (3222731575).

Almost surely, 2^6445463149 is an apocalyptic number.

It is an amenable number.

6445463149 is a deficient number, since it is larger than the sum of its proper divisors (1).

6445463149 is an equidigital number, since it uses as much as digits as its factorization.

6445463149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 46.

The square root of 6445463149 is about 80283.6418518742. The cubic root of 6445463149 is about 1861.0214404453.

The spelling of 6445463149 in words is "six billion, four hundred forty-five million, four hundred sixty-three thousand, one hundred forty-nine".