1963819440277 has 2 divisors, whose sum is σ = 1963819440278. Its totient is φ = 1963819440276.

The previous prime is 1963819440239. The next prime is 1963819440287. The reversal of 1963819440277 is 7720449183691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1269078853156 + 694740587121 = 1126534^2 + 833511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1963819440277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1963819440287) 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, 981909720138 + 981909720139.

It is an arithmetic number, because the mean of its divisors is an integer number (981909720139).

Almost surely, 2^{1963819440277} is an apocalyptic number.

It is an amenable number.

1963819440277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963819440277 is an equidigital number, since it uses as much as digits as its factorization.

1963819440277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 1963819440277 in words is "one trillion, nine hundred sixty-three billion, eight hundred nineteen million, four hundred forty thousand, two hundred seventy-seven".