1326920371193 has 2 divisors, whose sum is σ = 1326920371194. Its totient is φ = 1326920371192.

The previous prime is 1326920371163. The next prime is 1326920371237. The reversal of 1326920371193 is 3911730296231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 975091076089 + 351829295104 = 987467^2 + 593152^2 .

It is an emirp because it is prime and its reverse (3911730296231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1326920371193 - 2³⁰ = 1325846629369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1326920371123) 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, 663460185596 + 663460185597.

It is an arithmetic number, because the mean of its divisors is an integer number (663460185597).

Almost surely, 2^{1326920371193} is an apocalyptic number.

It is an amenable number.

1326920371193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326920371193 is an equidigital number, since it uses as much as digits as its factorization.

1326920371193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 47.

The spelling of 1326920371193 in words is "one trillion, three hundred twenty-six billion, nine hundred twenty million, three hundred seventy-one thousand, one hundred ninety-three".