138373838 has 8 divisors (see below), whose sum is σ = 209616120. Its totient is φ = 68501800.

The previous prime is 138373813. The next prime is 138373841. The reversal of 138373838 is 838373831.

138373838 is digitally balanced in base 3, 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.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342308 + ... + 342711.

It is an arithmetic number, because the mean of its divisors is an integer number (26202015).

Almost surely, 2^138373838 is an apocalyptic number.

138373838 is a deficient number, since it is larger than the sum of its proper divisors (71242282).

138373838 is a wasteful number, since it uses less digits than its factorization.

138373838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685122.

The product of its digits is 290304, while the sum is 44.

The square root of 138373838 is about 11763.2409649722. The cubic root of 138373838 is about 517.2311382382.

The spelling of 138373838 in words is "one hundred thirty-eight million, three hundred seventy-three thousand, eight hundred thirty-eight".