138319206 has 16 divisors (see below), whose sum is σ = 277849200. Its totient is φ = 45904608.

The previous prime is 138319193. The next prime is 138319211. The reversal of 138319206 is 602913831.

138319206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 48961 + ... + 51708.

It is an arithmetic number, because the mean of its divisors is an integer number (17365575).

Almost surely, 2^138319206 is an apocalyptic number.

138319206 is an abundant number, since it is smaller than the sum of its proper divisors (139529994).

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

138319206 is a wasteful number, since it uses less digits than its factorization.

138319206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100903.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 138319206 is about 11760.9185865731. The cubic root of 138319206 is about 517.1630591572.

The spelling of 138319206 in words is "one hundred thirty-eight million, three hundred nineteen thousand, two hundred six".