138915183 has 16 divisors (see below), whose sum is σ = 202444416. Its totient is φ = 84030240.

The previous prime is 138915169. The next prime is 138915209. The reversal of 138915183 is 381519831.

It is not a de Polignac number, because 138915183 - 2⁸ = 138914927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138915163) 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, 14841 + ... + 22317.

It is an arithmetic number, because the mean of its divisors is an integer number (12652776).

Almost surely, 2^138915183 is an apocalyptic number.

138915183 is a deficient number, since it is larger than the sum of its proper divisors (63529233).

138915183 is a wasteful number, since it uses less digits than its factorization.

138915183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8054.

The product of its digits is 25920, while the sum is 39.

The square root of 138915183 is about 11786.2285316381. The cubic root of 138915183 is about 517.9047630302.

The spelling of 138915183 in words is "one hundred thirty-eight million, nine hundred fifteen thousand, one hundred eighty-three".