13220193937 has 2 divisors, whose sum is σ = 13220193938. Its totient is φ = 13220193936.

The previous prime is 13220193907. The next prime is 13220193983. The reversal of 13220193937 is 73939102231.

13220193937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6613592976 + 6606600961 = 81324^2 + 81281^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220193937 - 2⁷ = 13220193809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13220193937.

It is not a weakly prime, because it can be changed into another prime (13220193907) 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, 6610096968 + 6610096969.

It is an arithmetic number, because the mean of its divisors is an integer number (6610096969).

Almost surely, 2^13220193937 is an apocalyptic number.

It is an amenable number.

13220193937 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220193937 is an equidigital number, since it uses as much as digits as its factorization.

13220193937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 40.

The spelling of 13220193937 in words is "thirteen billion, two hundred twenty million, one hundred ninety-three thousand, nine hundred thirty-seven".