9903078128 has 10 divisors (see below), whose sum is σ = 19187213904. Its totient is φ = 4951539056.

The previous prime is 9903078121. The next prime is 9903078169. The reversal of 9903078128 is 8218703099.

9903078128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9903078121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309471176 + ... + 309471207.

Almost surely, 2^9903078128 is an apocalyptic number.

It is an amenable number.

9903078128 is a deficient number, since it is larger than the sum of its proper divisors (9284135776).

9903078128 is a wasteful number, since it uses less digits than its factorization.

9903078128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618942391 (or 618942385 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 9903078128 is about 99514.2106837008. The cubic root of 9903078128 is about 2147.4516862357.

The spelling of 9903078128 in words is "nine billion, nine hundred three million, seventy-eight thousand, one hundred twenty-eight".