138196 has 6 divisors (see below), whose sum is σ = 241850. Its totient is φ = 69096.

The previous prime is 138191. The next prime is 138197. The reversal of 138196 is 691831.

It is a happy number.

138196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 136900 + 1296 = 370^2 + 36^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138191) by changing a digit.

138196 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17271 + ... + 17278.

2¹³⁸¹⁹⁶ is an apocalyptic number.

It is an amenable number.

138196 is a deficient number, since it is larger than the sum of its proper divisors (103654).

138196 is a wasteful number, since it uses less digits than its factorization.

138196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34553 (or 34551 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 138196 is about 371.7472259480. The cubic root of 138196 is about 51.7009461496.

Subtracting from 138196 its product of digits (1296), we obtain a square (136900 = 370²).

The spelling of 138196 in words is "one hundred thirty-eight thousand, one hundred ninety-six".