138144196 has 6 divisors (see below), whose sum is σ = 241752350. Its totient is φ = 69072096.

The previous prime is 138144191. The next prime is 138144217. The reversal of 138144196 is 691441831.

138144196 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., 125753796 + 12390400 = 11214^2 + 3520^2 .

It is not an unprimeable number, because it can be changed into a prime (138144191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17268021 + ... + 17268028.

Almost surely, 2^138144196 is an apocalyptic number.

It is an amenable number.

138144196 is a deficient number, since it is larger than the sum of its proper divisors (103608154).

138144196 is a wasteful number, since it uses less digits than its factorization.

138144196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34536053 (or 34536051 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 138144196 is about 11753.4759114060. The cubic root of 138144196 is about 516.9448515565.

It can be divided in two parts, 1381 and 44196, that multiplied together give a triangular number (61034676 = T₁₁₀₄₈).

The spelling of 138144196 in words is "one hundred thirty-eight million, one hundred forty-four thousand, one hundred ninety-six".