138178948 has 6 divisors (see below), whose sum is σ = 241813166. Its totient is φ = 69089472.

The previous prime is 138178933. The next prime is 138178951. The reversal of 138178948 is 849871831.

138178948 is digitally balanced in base 3, 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., 133125444 + 5053504 = 11538^2 + 2248^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17272365 + ... + 17272372.

Almost surely, 2^138178948 is an apocalyptic number.

It is an amenable number.

138178948 is a deficient number, since it is larger than the sum of its proper divisors (103634218).

138178948 is a wasteful number, since it uses less digits than its factorization.

138178948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34544741 (or 34544739 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

The square root of 138178948 is about 11754.9541896172. The cubic root of 138178948 is about 516.9881960274.

The spelling of 138178948 in words is "one hundred thirty-eight million, one hundred seventy-eight thousand, nine hundred forty-eight".