1263492735893 has 2 divisors, whose sum is σ = 1263492735894. Its totient is φ = 1263492735892.

The previous prime is 1263492735881. The next prime is 1263492735919. The reversal of 1263492735893 is 3985372943621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1028483996164 + 235008739729 = 1014142^2 + 484777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263492735893 - 2⁶ = 1263492735829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263492732893) 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, 631746367946 + 631746367947.

It is an arithmetic number, because the mean of its divisors is an integer number (631746367947).

Almost surely, 2^{1263492735893} is an apocalyptic number.

It is an amenable number.

1263492735893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263492735893 is an equidigital number, since it uses as much as digits as its factorization.

1263492735893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58786560, while the sum is 62.

The spelling of 1263492735893 in words is "one trillion, two hundred sixty-three billion, four hundred ninety-two million, seven hundred thirty-five thousand, eight hundred ninety-three".