138346838 has 16 divisors (see below), whose sum is σ = 237410304. Its totient is φ = 59230440.

The previous prime is 138346783. The next prime is 138346883. The reversal of 138346838 is 838643831.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10673 + ... + 19763.

It is an arithmetic number, because the mean of its divisors is an integer number (14838144).

Almost surely, 2^138346838 is an apocalyptic number.

138346838 is a deficient number, since it is larger than the sum of its proper divisors (99063466).

138346838 is a wasteful number, since it uses less digits than its factorization.

138346838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10187.

The product of its digits is 331776, while the sum is 44.

The square root of 138346838 is about 11762.0932660815. The cubic root of 138346838 is about 517.1974947178.

The spelling of 138346838 in words is "one hundred thirty-eight million, three hundred forty-six thousand, eight hundred thirty-eight".