1964589268331 has 2 divisors, whose sum is σ = 1964589268332. Its totient is φ = 1964589268330.

The previous prime is 1964589268321. The next prime is 1964589268333. The reversal of 1964589268331 is 1338629854691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1964589268331 - 2¹⁸ = 1964589006187 is a prime.

It is a super-2 number, since 2×1964589268331² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 1964589268333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1964589268333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982294634165 + 982294634166.

It is an arithmetic number, because the mean of its divisors is an integer number (982294634166).

Almost surely, 2^{1964589268331} is an apocalyptic number.

1964589268331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964589268331 is an equidigital number, since it uses as much as digits as its factorization.

1964589268331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67184640, while the sum is 65.

The spelling of 1964589268331 in words is "one trillion, nine hundred sixty-four billion, five hundred eighty-nine million, two hundred sixty-eight thousand, three hundred thirty-one".