13219957889 has 2 divisors, whose sum is σ = 13219957890. Its totient is φ = 13219957888.

The previous prime is 13219957859. The next prime is 13219957909. The reversal of 13219957889 is 98875991231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12950440000 + 269517889 = 113800^2 + 16417^2 .

It is a cyclic number.

It is not a de Polignac number, because 13219957889 - 2⁸ = 13219957633 is a prime.

It is not a weakly prime, because it can be changed into another prime (13219957859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6609978944 + 6609978945.

It is an arithmetic number, because the mean of its divisors is an integer number (6609978945).

Almost surely, 2^13219957889 is an apocalyptic number.

It is an amenable number.

13219957889 is a deficient number, since it is larger than the sum of its proper divisors (1).

13219957889 is an equidigital number, since it uses as much as digits as its factorization.

13219957889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 62.

The spelling of 13219957889 in words is "thirteen billion, two hundred nineteen million, nine hundred fifty-seven thousand, eight hundred eighty-nine".