138193316634 has 32 divisors (see below), whose sum is σ = 278948805696. Its totient is φ = 45638552960.

The previous prime is 138193316609. The next prime is 138193316663. The reversal of 138193316634 is 436613391831.

138193316634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342484 + ... + 627440.

It is an arithmetic number, because the mean of its divisors is an integer number (8717150178).

Almost surely, 2^138193316634 is an apocalyptic number.

138193316634 is an abundant number, since it is smaller than the sum of its proper divisors (140755489062).

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

138193316634 is a wasteful number, since it uses less digits than its factorization.

138193316634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285710.

The product of its digits is 839808, while the sum is 48.

The spelling of 138193316634 in words is "one hundred thirty-eight billion, one hundred ninety-three million, three hundred sixteen thousand, six hundred thirty-four".