9187328664 has 64 divisors (see below), whose sum is σ = 25603670400. Its totient is φ = 3052445472.

The previous prime is 9187328659. The next prime is 9187328677. The reversal of 9187328664 is 4668237819.

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

It is a self number, because there is not a number n which added to its sum of digits gives 9187328664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2962 + ... + 135585.

It is an arithmetic number, because the mean of its divisors is an integer number (400057350).

Almost surely, 2^9187328664 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 9187328664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12801835200).

9187328664 is an abundant number, since it is smaller than the sum of its proper divisors (16416341736).

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

9187328664 is a wasteful number, since it uses less digits than its factorization.

9187328664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138869 (or 138859 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 9187328664 is about 95850.5538012170. The cubic root of 9187328664 is about 2094.4166624343.

The spelling of 9187328664 in words is "nine billion, one hundred eighty-seven million, three hundred twenty-eight thousand, six hundred sixty-four".