138167927 has 4 divisors (see below), whose sum is σ = 139222776. Its totient is φ = 137113080.

The previous prime is 138167819. The next prime is 138167933. The reversal of 138167927 is 729761831.

138167927 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 729761831 = 131 ⋅5570701.

It is a cyclic number.

It is not a de Polignac number, because 138167927 - 2⁸ = 138167671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138167947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527228 + ... + 527489.

It is an arithmetic number, because the mean of its divisors is an integer number (34805694).

Almost surely, 2^138167927 is an apocalyptic number.

138167927 is a deficient number, since it is larger than the sum of its proper divisors (1054849).

138167927 is a wasteful number, since it uses less digits than its factorization.

138167927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054848.

The product of its digits is 127008, while the sum is 44.

The square root of 138167927 is about 11754.4853991997. The cubic root of 138167927 is about 516.9744508598.

The spelling of 138167927 in words is "one hundred thirty-eight million, one hundred sixty-seven thousand, nine hundred twenty-seven".