1956944496569 has 2 divisors, whose sum is σ = 1956944496570. Its totient is φ = 1956944496568.

The previous prime is 1956944496523. The next prime is 1956944496629. The reversal of 1956944496569 is 9656944496591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1682242722169 + 274701774400 = 1297013^2 + 524120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1956944496569 - 2¹⁶ = 1956944431033 is a prime.

It is a super-2 number, since 2×1956944496569² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1956944496569.

It is not a weakly prime, because it can be changed into another prime (1956944499569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978472248284 + 978472248285.

It is an arithmetic number, because the mean of its divisors is an integer number (978472248285).

Almost surely, 2^{1956944496569} is an apocalyptic number.

It is an amenable number.

1956944496569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956944496569 is an equidigital number, since it uses as much as digits as its factorization.

1956944496569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2267481600, while the sum is 77.

The spelling of 1956944496569 in words is "one trillion, nine hundred fifty-six billion, nine hundred forty-four million, four hundred ninety-six thousand, five hundred sixty-nine".