138227567 has 2 divisors, whose sum is σ = 138227568. Its totient is φ = 138227566.

The previous prime is 138227549. The next prime is 138227599. The reversal of 138227567 is 765722831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138227567 - 2⁶ = 138227503 is a prime.

It is a Chen prime.

It is equal to p_7817585 and since 138227567 and 7817585 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138227267) 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, 69113783 + 69113784.

It is an arithmetic number, because the mean of its divisors is an integer number (69113784).

Almost surely, 2^138227567 is an apocalyptic number.

138227567 is a deficient number, since it is larger than the sum of its proper divisors (1).

138227567 is an equidigital number, since it uses as much as digits as its factorization.

138227567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 138227567 is about 11757.0220294086. The cubic root of 138227567 is about 517.0488239354.

The spelling of 138227567 in words is "one hundred thirty-eight million, two hundred twenty-seven thousand, five hundred sixty-seven".