138265727 has 2 divisors, whose sum is σ = 138265728. Its totient is φ = 138265726.

The previous prime is 138265697. The next prime is 138265759. The reversal of 138265727 is 727562831.

It is a weak prime.

It is an emirp because it is prime and its reverse (727562831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138265727 - 2¹⁰ = 138264703 is a prime.

It is a super-2 number, since 2×138265727² = 38234822525677058, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138262727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69132863 + 69132864.

It is an arithmetic number, because the mean of its divisors is an integer number (69132864).

Almost surely, 2^138265727 is an apocalyptic number.

138265727 is a deficient number, since it is larger than the sum of its proper divisors (1).

138265727 is an equidigital number, since it uses as much as digits as its factorization.

138265727 is an evil number, because the sum of its binary digits is even.

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

The square root of 138265727 is about 11758.6447773542. The cubic root of 138265727 is about 517.0963995100.

The spelling of 138265727 in words is "one hundred thirty-eight million, two hundred sixty-five thousand, seven hundred twenty-seven".