2164543488 has 156 divisors (see below), whose sum is σ = 6348090528. Its totient is φ = 710492160.

The previous prime is 2164543487. The next prime is 2164543529. The reversal of 2164543488 is 8843454612.

2164543488 is a `hidden beast` number, since 2 + 1 + 64 + 543 + 48 + 8 = 666.

It is a super-2 number, since 2×2164543488² = 9370497022886412288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164543487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2616931 + ... + 2617757.

It is an arithmetic number, because the mean of its divisors is an integer number (40692888).

Almost surely, 2^2164543488 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 2164543488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3174045264).

2164543488 is an abundant number, since it is smaller than the sum of its proper divisors (4183547040).

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

2164543488 is an equidigital number, since it uses as much as digits as its factorization.

2164543488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 903 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 2164543488 is about 46524.6546252629. The cubic root of 2164543488 is about 1293.5665355752.

The spelling of 2164543488 in words is "two billion, one hundred sixty-four million, five hundred forty-three thousand, four hundred eighty-eight".