138671068 has 6 divisors (see below), whose sum is σ = 242674376. Its totient is φ = 69335532.

The previous prime is 138671053. The next prime is 138671077. The reversal of 138671068 is 860176831.

It is a self number, because there is not a number n which added to its sum of digits gives 138671068.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17333880 + ... + 17333887.

Almost surely, 2^138671068 is an apocalyptic number.

It is an amenable number.

138671068 is a deficient number, since it is larger than the sum of its proper divisors (104003308).

138671068 is a wasteful number, since it uses less digits than its factorization.

138671068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34667771 (or 34667769 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 138671068 is about 11775.8680359454. The cubic root of 138671068 is about 517.6012146151.

The spelling of 138671068 in words is "one hundred thirty-eight million, six hundred seventy-one thousand, sixty-eight".