12394726891 has 2 divisors, whose sum is σ = 12394726892. Its totient is φ = 12394726890.

The previous prime is 12394726873. The next prime is 12394726901. The reversal of 12394726891 is 19862749321.

12394726891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12394726891 - 2⁵ = 12394726859 is a prime.

It is not a weakly prime, because it can be changed into another prime (12394726801) 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, 6197363445 + 6197363446.

It is an arithmetic number, because the mean of its divisors is an integer number (6197363446).

Almost surely, 2^12394726891 is an apocalyptic number.

12394726891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12394726891 is an equidigital number, since it uses as much as digits as its factorization.

12394726891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The spelling of 12394726891 in words is "twelve billion, three hundred ninety-four million, seven hundred twenty-six thousand, eight hundred ninety-one".