2188705632 has 48 divisors (see below), whose sum is σ = 5943475440. Its totient is φ = 704410112.

The previous prime is 2188705621. The next prime is 2188705639. The reversal of 2188705632 is 2365078812.

2188705632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188705639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390303 + ... + 395870.

It is an arithmetic number, because the mean of its divisors is an integer number (123822405).

Almost surely, 2^2188705632 is an apocalyptic number.

It is an amenable number.

2188705632 is an abundant number, since it is smaller than the sum of its proper divisors (3754769808).

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

2188705632 is a wasteful number, since it uses less digits than its factorization.

2188705632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786215 (or 786207 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 2188705632 is about 46783.6043074922. The cubic root of 2188705632 is about 1298.3619668837.

The spelling of 2188705632 in words is "two billion, one hundred eighty-eight million, seven hundred five thousand, six hundred thirty-two".