1964589288197 has 2 divisors, whose sum is σ = 1964589288198. Its totient is φ = 1964589288196.

The previous prime is 1964589288163. The next prime is 1964589288229. The reversal of 1964589288197 is 7918829854691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1401415586596 + 563173701601 = 1183814^2 + 750449^2 .

It is a cyclic number.

It is not a de Polignac number, because 1964589288197 - 2³⁰ = 1963515546373 is a prime.

It is a super-2 number, since 2×1964589288197² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1964589287197) 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, 982294644098 + 982294644099.

It is an arithmetic number, because the mean of its divisors is an integer number (982294644099).

Almost surely, 2^{1964589288197} is an apocalyptic number.

It is an amenable number.

1964589288197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964589288197 is an equidigital number, since it uses as much as digits as its factorization.

1964589288197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 627056640, while the sum is 77.

The spelling of 1964589288197 in words is "one trillion, nine hundred sixty-four billion, five hundred eighty-nine million, two hundred eighty-eight thousand, one hundred ninety-seven".