2188716672 has 64 divisors (see below), whose sum is σ = 5868223200. Its totient is φ = 722740224.

The previous prime is 2188716643. The next prime is 2188716683. The reversal of 2188716672 is 2766178812.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14454 + ... + 67722.

Almost surely, 2^2188716672 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 2188716672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2934111600).

2188716672 is an abundant number, since it is smaller than the sum of its proper divisors (3679506528).

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

2188716672 is a wasteful number, since it uses less digits than its factorization.

2188716672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53393 (or 53381 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 2188716672 is about 46783.7222973974. The cubic root of 2188716672 is about 1298.3641498927.

The spelling of 2188716672 in words is "two billion, one hundred eighty-eight million, seven hundred sixteen thousand, six hundred seventy-two".