13681828091 has 2 divisors, whose sum is σ = 13681828092. Its totient is φ = 13681828090.

The previous prime is 13681828081. The next prime is 13681828103. The reversal of 13681828091 is 19082818631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13681828091 is a prime.

It is not a weakly prime, because it can be changed into another prime (13681828081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6840914045 + 6840914046.

It is an arithmetic number, because the mean of its divisors is an integer number (6840914046).

Almost surely, 2^13681828091 is an apocalyptic number.

13681828091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13681828091 is an equidigital number, since it uses as much as digits as its factorization.

13681828091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 47.

The spelling of 13681828091 in words is "thirteen billion, six hundred eighty-one million, eight hundred twenty-eight thousand, ninety-one".