138363189 has 16 divisors (see below), whose sum is σ = 189196224. Its totient is φ = 89913600.

The previous prime is 138363163. The next prime is 138363191. The reversal of 138363189 is 981363831.

It is not a de Polignac number, because 138363189 - 2⁷ = 138363061 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 138363189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138363139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17334 + ... + 24024.

It is an arithmetic number, because the mean of its divisors is an integer number (11824764).

Almost surely, 2^138363189 is an apocalyptic number.

It is an amenable number.

138363189 is a deficient number, since it is larger than the sum of its proper divisors (50833035).

138363189 is a wasteful number, since it uses less digits than its factorization.

138363189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868.

The product of its digits is 93312, while the sum is 42.

The square root of 138363189 is about 11762.7883174016. The cubic root of 138363189 is about 517.2178695072.

The spelling of 138363189 in words is "one hundred thirty-eight million, three hundred sixty-three thousand, one hundred eighty-nine".