138324186 has 160 divisors (see below), whose sum is σ = 416642688. Its totient is φ = 33125760.

The previous prime is 138324169. The next prime is 138324187. The reversal of 138324186 is 681423831.

138324186 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 138324186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138324187) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 161736 + ... + 162588.

Almost surely, 2^138324186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138324186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208321344).

138324186 is an abundant number, since it is smaller than the sum of its proper divisors (278318502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138324186 is a wasteful number, since it uses less digits than its factorization.

138324186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 889 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 138324186 is about 11761.1303028238. The cubic root of 138324186 is about 517.1692656733.

The spelling of 138324186 in words is "one hundred thirty-eight million, three hundred twenty-four thousand, one hundred eighty-six".