138685183 has 8 divisors (see below), whose sum is σ = 170689568. Its totient is φ = 109728864.

The previous prime is 138685171. The next prime is 138685219. The reversal of 138685183 is 381586831.

138685183 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138685183 - 2¹⁷ = 138554111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138682183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761916 + ... + 762097.

It is an arithmetic number, because the mean of its divisors is an integer number (21336196).

Almost surely, 2^138685183 is an apocalyptic number.

138685183 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

138685183 is a deficient number, since it is larger than the sum of its proper divisors (32004385).

138685183 is a wasteful number, since it uses less digits than its factorization.

138685183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524033.

The product of its digits is 138240, while the sum is 43.

The square root of 138685183 is about 11776.4673395717. The cubic root of 138685183 is about 517.6187758204.

The spelling of 138685183 in words is "one hundred thirty-eight million, six hundred eighty-five thousand, one hundred eighty-three".