9894076128 has 60 divisors (see below), whose sum is σ = 29098210680. Its totient is φ = 3298024512.

The previous prime is 9894076123. The next prime is 9894076147. The reversal of 9894076128 is 8216704989.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9894076121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1905988 + ... + 1911171.

It is an arithmetic number, because the mean of its divisors is an integer number (484970178).

Almost surely, 2^9894076128 is an apocalyptic number.

It is an amenable number.

9894076128 is an abundant number, since it is smaller than the sum of its proper divisors (19204134552).

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

9894076128 is a wasteful number, since it uses less digits than its factorization.

9894076128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817181 (or 3817164 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 9894076128 is about 99468.9706793028. The cubic root of 9894076128 is about 2146.8008037438.

The spelling of 9894076128 in words is "nine billion, eight hundred ninety-four million, seventy-six thousand, one hundred twenty-eight".