6544045939 has 2 divisors, whose sum is σ = 6544045940. Its totient is φ = 6544045938.

The previous prime is 6544045903. The next prime is 6544045961. The reversal of 6544045939 is 9395404456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6544045939 - 2¹⁹ = 6543521651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6544045892 and 6544045901.

It is not a weakly prime, because it can be changed into another prime (6544045999) 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, 3272022969 + 3272022970.

It is an arithmetic number, because the mean of its divisors is an integer number (3272022970).

Almost surely, 2^6544045939 is an apocalyptic number.

6544045939 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544045939 is an equidigital number, since it uses as much as digits as its factorization.

6544045939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The square root of 6544045939 is about 80895.2776062979. The cubic root of 6544045939 is about 1870.4615272508.

The spelling of 6544045939 in words is "six billion, five hundred forty-four million, forty-five thousand, nine hundred thirty-nine".