138266327 has 2 divisors, whose sum is σ = 138266328. Its totient is φ = 138266326.

The previous prime is 138266267. The next prime is 138266329. The reversal of 138266327 is 723662831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138266327 - 2⁶ = 138266263 is a prime.

Together with 138266329, 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 (138266329) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69133163 + 69133164.

It is an arithmetic number, because the mean of its divisors is an integer number (69133164).

Almost surely, 2^138266327 is an apocalyptic number.

138266327 is a deficient number, since it is larger than the sum of its proper divisors (1).

138266327 is an equidigital number, since it uses as much as digits as its factorization.

138266327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 138266327 is about 11758.6702904708. The cubic root of 138266327 is about 517.0971474837.

The spelling of 138266327 in words is "one hundred thirty-eight million, two hundred sixty-six thousand, three hundred twenty-seven".