9719604138 has 16 divisors (see below), whose sum is σ = 19447299936. Its totient is φ = 3238519440.

The previous prime is 9719604133. The next prime is 9719604151. The reversal of 9719604138 is 8314069179.

It is a happy number.

9719604138 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9719604131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321481 + ... + 350412.

It is an arithmetic number, because the mean of its divisors is an integer number (1215456246).

Almost surely, 2^9719604138 is an apocalyptic number.

9719604138 is an abundant number, since it is smaller than the sum of its proper divisors (9727695798).

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

9719604138 is a wasteful number, since it uses less digits than its factorization.

9719604138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674309.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 9719604138 is about 98588.0527143122. The cubic root of 9719604138 is about 2134.1070103069.

The spelling of 9719604138 in words is "nine billion, seven hundred nineteen million, six hundred four thousand, one hundred thirty-eight".