138107994 has 8 divisors (see below), whose sum is σ = 276216000. Its totient is φ = 46035996.

The previous prime is 138107923. The next prime is 138107999. The reversal of 138107994 is 499701831.

It is a happy number.

138107994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

138107994 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (138107999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11508994 + ... + 11509005.

It is an arithmetic number, because the mean of its divisors is an integer number (34527000).

Almost surely, 2^138107994 is an apocalyptic number.

138107994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138107994 is a wasteful number, since it uses less digits than its factorization.

138107994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23018004.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 138107994 is about 11751.9357554405. The cubic root of 138107994 is about 516.8996908402.

The spelling of 138107994 in words is "one hundred thirty-eight million, one hundred seven thousand, nine hundred ninety-four".