15964054949 has 2 divisors, whose sum is σ = 15964054950. Its totient is φ = 15964054948.

The previous prime is 15964054861. The next prime is 15964054963. The reversal of 15964054949 is 94945046951.

15964054949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12236341924 + 3727713025 = 110618^2 + 61055^2 .

It is a cyclic number.

It is not a de Polignac number, because 15964054949 - 2⁸ = 15964054693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15964054894 and 15964054903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15964054979) 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, 7982027474 + 7982027475.

It is an arithmetic number, because the mean of its divisors is an integer number (7982027475).

Almost surely, 2^15964054949 is an apocalyptic number.

It is an amenable number.

15964054949 is a deficient number, since it is larger than the sum of its proper divisors (1).

15964054949 is an equidigital number, since it uses as much as digits as its factorization.

15964054949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 15964054949 in words is "fifteen billion, nine hundred sixty-four million, fifty-four thousand, nine hundred forty-nine".