138134859 has 16 divisors (see below), whose sum is σ = 190905120. Its totient is φ = 88739840.

The previous prime is 138134851. The next prime is 138134869. The reversal of 138134859 is 958431831.

138134859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 138134859 - 2³ = 138134851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138134859.

It is not an unprimeable number, because it can be changed into a prime (138134851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54529 + ... + 57005.

It is an arithmetic number, because the mean of its divisors is an integer number (11931570).

Almost surely, 2^138134859 is an apocalyptic number.

138134859 is a deficient number, since it is larger than the sum of its proper divisors (52770261).

138134859 is a wasteful number, since it uses less digits than its factorization.

138134859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150.

The product of its digits is 103680, while the sum is 42.

The square root of 138134859 is about 11753.0787030463. The cubic root of 138134859 is about 516.9332047339.

The spelling of 138134859 in words is "one hundred thirty-eight million, one hundred thirty-four thousand, eight hundred fifty-nine".