138228107 has 2 divisors, whose sum is σ = 138228108. Its totient is φ = 138228106.

The previous prime is 138228089. The next prime is 138228109. The reversal of 138228107 is 701822831.

It is a strong prime.

It is an emirp because it is prime and its reverse (701822831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138228107 - 2⁶ = 138228043 is a prime.

Together with 138228109, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138228109) 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, 69114053 + 69114054.

It is an arithmetic number, because the mean of its divisors is an integer number (69114054).

Almost surely, 2^138228107 is an apocalyptic number.

138228107 is a deficient number, since it is larger than the sum of its proper divisors (1).

138228107 is an equidigital number, since it uses as much as digits as its factorization.

138228107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 138228107 is about 11757.0449943853. The cubic root of 138228107 is about 517.0494972358.

The spelling of 138228107 in words is "one hundred thirty-eight million, two hundred twenty-eight thousand, one hundred seven".