138068968 has 32 divisors (see below), whose sum is σ = 278769600. Its totient is φ = 63868672.

The previous prime is 138068933. The next prime is 138068969. The reversal of 138068968 is 869860831.

It is not an unprimeable number, because it can be changed into a prime (138068969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580 + ... + 16627.

It is an arithmetic number, because the mean of its divisors is an integer number (8711550).

Almost surely, 2^138068968 is an apocalyptic number.

It is an amenable number.

138068968 is an abundant number, since it is smaller than the sum of its proper divisors (140700632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138068968 is a wasteful number, since it uses less digits than its factorization.

138068968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17289 (or 17285 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 138068968 is about 11750.2752308191. The cubic root of 138068968 is about 516.8509984434.

The spelling of 138068968 in words is "one hundred thirty-eight million, sixty-eight thousand, nine hundred sixty-eight".