12378167 has 2 divisors, whose sum is σ = 12378168. Its totient is φ = 12378166.

The previous prime is 12378161. The next prime is 12378169. The reversal of 12378167 is 76187321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12378167 - 2⁴ = 12378151 is a prime.

Together with 12378169, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12378161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6189083 + 6189084.

It is an arithmetic number, because the mean of its divisors is an integer number (6189084).

Almost surely, 2^12378167 is an apocalyptic number.

12378167 is a deficient number, since it is larger than the sum of its proper divisors (1).

12378167 is an equidigital number, since it uses as much as digits as its factorization.

12378167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 35.

The square root of 12378167 is about 3518.2619288507. The cubic root of 12378167 is about 231.3229804231.

The spelling of 12378167 in words is "twelve million, three hundred seventy-eight thousand, one hundred sixty-seven".