138716267 has 2 divisors, whose sum is σ = 138716268. Its totient is φ = 138716266.

The previous prime is 138716261. The next prime is 138716269. The reversal of 138716267 is 762617831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138716267 - 2⁶ = 138716203 is a prime.

Together with 138716269, 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 (138716261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69358133 + 69358134.

It is an arithmetic number, because the mean of its divisors is an integer number (69358134).

Almost surely, 2^138716267 is an apocalyptic number.

138716267 is a deficient number, since it is larger than the sum of its proper divisors (1).

138716267 is an equidigital number, since it uses as much as digits as its factorization.

138716267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 138716267 is about 11777.7870162438. The cubic root of 138716267 is about 517.6574448398.

The spelling of 138716267 in words is "one hundred thirty-eight million, seven hundred sixteen thousand, two hundred sixty-seven".