9189317020 has 96 divisors (see below), whose sum is σ = 22420214208. Its totient is φ = 3133059072.

The previous prime is 9189316999. The next prime is 9189317023. The reversal of 9189317020 is 207139819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9189317023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214647 + ... + 253873.

It is an arithmetic number, because the mean of its divisors is an integer number (233543898).

Almost surely, 2^9189317020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9189317020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11210107104).

9189317020 is an abundant number, since it is smaller than the sum of its proper divisors (13230897188).

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

9189317020 is a wasteful number, since it uses less digits than its factorization.

9189317020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39319 (or 39317 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 9189317020 is about 95860.9254075924. The cubic root of 9189317020 is about 2094.5677453623.

The spelling of 9189317020 in words is "nine billion, one hundred eighty-nine million, three hundred seventeen thousand, twenty".