138223182 has 16 divisors (see below), whose sum is σ = 278894160. Its totient is φ = 45666432.

The previous prime is 138223181. The next prime is 138223291. The reversal of 138223182 is 281322831.

138223182 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138223181) 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, 101257 + ... + 102612.

It is an arithmetic number, because the mean of its divisors is an integer number (17430885).

Almost surely, 2^138223182 is an apocalyptic number.

138223182 is an abundant number, since it is smaller than the sum of its proper divisors (140670978).

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

138223182 is a wasteful number, since it uses less digits than its factorization.

138223182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203987.

The product of its digits is 4608, while the sum is 30.

The square root of 138223182 is about 11756.8355436316. The cubic root of 138223182 is about 517.0433564224.

The spelling of 138223182 in words is "one hundred thirty-eight million, two hundred twenty-three thousand, one hundred eighty-two".