138084189 has 8 divisors (see below), whose sum is σ = 184189152. Its totient is φ = 92017680.

The previous prime is 138084181. The next prime is 138084197. The reversal of 138084189 is 981480831.

It is an interprime number because it is at equal distance from previous prime (138084181) and next prime (138084197).

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

It is not a de Polignac number, because 138084189 - 2³ = 138084181 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 138084189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138084181) 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, 199 + ... + 16619.

It is an arithmetic number, because the mean of its divisors is an integer number (23023644).

Almost surely, 2^138084189 is an apocalyptic number.

It is an amenable number.

138084189 is a deficient number, since it is larger than the sum of its proper divisors (46104963).

138084189 is a wasteful number, since it uses less digits than its factorization.

138084189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19227.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 138084189 is about 11750.9228999258. The cubic root of 138084189 is about 516.8699906425.

The spelling of 138084189 in words is "one hundred thirty-eight million, eighty-four thousand, one hundred eighty-nine".