9168439128 has 32 divisors (see below), whose sum is σ = 22928915760. Its totient is φ = 3055104000.

The previous prime is 9168439123. The next prime is 9168439153. The reversal of 9168439128 is 8219348619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9168439121) 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, 8376 + ... + 135672.

Almost surely, 2^9168439128 is an apocalyptic number.

It is an amenable number.

9168439128 is an abundant number, since it is smaller than the sum of its proper divisors (13760476632).

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

9168439128 is a wasteful number, since it uses less digits than its factorization.

9168439128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130307 (or 130303 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 9168439128 is about 95751.9667056505. The cubic root of 9168439128 is about 2092.9802745025.

The spelling of 9168439128 in words is "nine billion, one hundred sixty-eight million, four hundred thirty-nine thousand, one hundred twenty-eight".