12186331439 has 2 divisors, whose sum is σ = 12186331440. Its totient is φ = 12186331438.

The previous prime is 12186331429. The next prime is 12186331457. The reversal of 12186331439 is 93413368121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12186331439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12186331396 and 12186331405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12186331429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6093165719 + 6093165720.

It is an arithmetic number, because the mean of its divisors is an integer number (6093165720).

Almost surely, 2^12186331439 is an apocalyptic number.

12186331439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12186331439 is an equidigital number, since it uses as much as digits as its factorization.

12186331439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The spelling of 12186331439 in words is "twelve billion, one hundred eighty-six million, three hundred thirty-one thousand, four hundred thirty-nine".