9378985920 has 56 divisors (see below), whose sum is σ = 29778283344. Its totient is φ = 2501062656.

The previous prime is 9378985909. The next prime is 9378985943. The reversal of 9378985920 is 295898739.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4883929 + ... + 4885848.

Almost surely, 2^9378985920 is an apocalyptic number.

It is an amenable number.

9378985920 is an abundant number, since it is smaller than the sum of its proper divisors (20399297424).

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

9378985920 is a wasteful number, since it uses less digits than its factorization.

9378985920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769797 (or 9769787 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The square root of 9378985920 is about 96845.1646702095. The cubic root of 9378985920 is about 2108.8804524805.

The spelling of 9378985920 in words is "nine billion, three hundred seventy-eight million, nine hundred eighty-five thousand, nine hundred twenty".