9581428672 has 14 divisors (see below), whose sum is σ = 19013147648. Its totient is φ = 4790714304.

The previous prime is 9581428607. The next prime is 9581428679. The reversal of 9581428672 is 2768241859.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9581428679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74854848 + ... + 74854975.

Almost surely, 2^9581428672 is an apocalyptic number.

It is an amenable number.

9581428672 is a deficient number, since it is larger than the sum of its proper divisors (9431718976).

9581428672 is a wasteful number, since it uses less digits than its factorization.

9581428672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149709835 (or 149709825 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The square root of 9581428672 is about 97884.7724214548. The cubic root of 9581428672 is about 2123.9457688933.

The spelling of 9581428672 in words is "nine billion, five hundred eighty-one million, four hundred twenty-eight thousand, six hundred seventy-two".