138005338 has 16 divisors (see below), whose sum is σ = 213145344. Its totient is φ = 66966480.

The previous prime is 138005333. The next prime is 138005347. The reversal of 138005338 is 833500831.

138005338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (138005333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29731 + ... + 34057.

It is an arithmetic number, because the mean of its divisors is an integer number (13321584).

Almost surely, 2^138005338 is an apocalyptic number.

138005338 is a deficient number, since it is larger than the sum of its proper divisors (75140006).

138005338 is a wasteful number, since it uses less digits than its factorization.

138005338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 138005338 is about 11747.5673226417. The cubic root of 138005338 is about 516.7715881726.

The spelling of 138005338 in words is "one hundred thirty-eight million, five thousand, three hundred thirty-eight".