138589111 has 2 divisors, whose sum is σ = 138589112. Its totient is φ = 138589110.

The previous prime is 138589079. The next prime is 138589141. The reversal of 138589111 is 111985831.

138589111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138589111 - 2⁵ = 138589079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138589141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69294555 + 69294556.

It is an arithmetic number, because the mean of its divisors is an integer number (69294556).

Almost surely, 2^138589111 is an apocalyptic number.

138589111 is a deficient number, since it is larger than the sum of its proper divisors (1).

138589111 is an equidigital number, since it uses as much as digits as its factorization.

138589111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 37.

The square root of 138589111 is about 11772.3876507699. The cubic root of 138589111 is about 517.4992240959.

The spelling of 138589111 in words is "one hundred thirty-eight million, five hundred eighty-nine thousand, one hundred eleven".