138544192 has 28 divisors (see below), whose sum is σ = 276002496. Its totient is φ = 69000320.

The previous prime is 138544187. The next prime is 138544193. The reversal of 138544192 is 291445831.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (138544193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12717 + ... + 20947.

It is an arithmetic number, because the mean of its divisors is an integer number (9857232).

Almost surely, 2^138544192 is an apocalyptic number.

It is an amenable number.

138544192 is a deficient number, since it is larger than the sum of its proper divisors (137458304).

138544192 is an equidigital number, since it uses as much as digits as its factorization.

138544192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8506 (or 8496 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 138544192 is about 11770.4796843629. The cubic root of 138544192 is about 517.4433080638.

The spelling of 138544192 in words is "one hundred thirty-eight million, five hundred forty-four thousand, one hundred ninety-two".