13189809991 has 2 divisors, whose sum is σ = 13189809992. Its totient is φ = 13189809990.

The previous prime is 13189809989. The next prime is 13189810001. The reversal of 13189809991 is 19990898131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13189809991 - 2¹ = 13189809989 is a prime.

Together with 13189809989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13189809911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6594904995 + 6594904996.

It is an arithmetic number, because the mean of its divisors is an integer number (6594904996).

Almost surely, 2^13189809991 is an apocalyptic number.

13189809991 is a deficient number, since it is larger than the sum of its proper divisors (1).

13189809991 is an equidigital number, since it uses as much as digits as its factorization.

13189809991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 58.

The spelling of 13189809991 in words is "thirteen billion, one hundred eighty-nine million, eight hundred nine thousand, nine hundred ninety-one".