13641493109 has 2 divisors, whose sum is σ = 13641493110. Its totient is φ = 13641493108.

The previous prime is 13641493097. The next prime is 13641493133. The reversal of 13641493109 is 90139414631.

13641493109 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., 12363216100 + 1278277009 = 111190^2 + 35753^2 .

It is a cyclic number.

It is not a de Polignac number, because 13641493109 - 2⁴ = 13641493093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13641493199) 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, 6820746554 + 6820746555.

It is an arithmetic number, because the mean of its divisors is an integer number (6820746555).

Almost surely, 2^13641493109 is an apocalyptic number.

It is an amenable number.

13641493109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13641493109 is an equidigital number, since it uses as much as digits as its factorization.

13641493109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The spelling of 13641493109 in words is "thirteen billion, six hundred forty-one million, four hundred ninety-three thousand, one hundred nine".