138534206 has 16 divisors (see below), whose sum is σ = 221823360. Its totient is φ = 64695960.

The previous prime is 138534197. The next prime is 138534229. The reversal of 138534206 is 602435831.

138534206 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 22976 + ... + 28371.

It is an arithmetic number, because the mean of its divisors is an integer number (13863960).

Almost surely, 2^138534206 is an apocalyptic number.

138534206 is a deficient number, since it is larger than the sum of its proper divisors (83289154).

138534206 is a wasteful number, since it uses less digits than its factorization.

138534206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51439.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 138534206 is about 11770.0554799032. The cubic root of 138534206 is about 517.4308756576.

The spelling of 138534206 in words is "one hundred thirty-eight million, five hundred thirty-four thousand, two hundred six".