138926167 has 2 divisors, whose sum is σ = 138926168. Its totient is φ = 138926166.

The previous prime is 138926111. The next prime is 138926237. The reversal of 138926167 is 761629831.

138926167 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138926167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138926267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69463083 + 69463084.

It is an arithmetic number, because the mean of its divisors is an integer number (69463084).

Almost surely, 2^138926167 is an apocalyptic number.

138926167 is a deficient number, since it is larger than the sum of its proper divisors (1).

138926167 is an equidigital number, since it uses as much as digits as its factorization.

138926167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 138926167 is about 11786.6944899747. The cubic root of 138926167 is about 517.9184128844.

It can be divided in two parts, 1389 and 26167, that added together give a square (27556 = 166²).

The spelling of 138926167 in words is "one hundred thirty-eight million, nine hundred twenty-six thousand, one hundred sixty-seven".