2166318528 has 112 divisors (see below), whose sum is σ = 6299265024. Its totient is φ = 651581440.

The previous prime is 2166318523. The next prime is 2166318529. The reversal of 2166318528 is 8258136612.

It is a self number, because there is not a number n which added to its sum of digits gives 2166318528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166318523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285601 + ... + 293087.

Almost surely, 2^2166318528 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 2166318528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3149632512).

2166318528 is an abundant number, since it is smaller than the sum of its proper divisors (4132946496).

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

2166318528 is a wasteful number, since it uses less digits than its factorization.

2166318528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650 (or 7640 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 2166318528 is about 46543.7270531701. The cubic root of 2166318528 is about 1293.9200365931.

The spelling of 2166318528 in words is "two billion, one hundred sixty-six million, three hundred eighteen thousand, five hundred twenty-eight".