2163646632 has 64 divisors (see below), whose sum is σ = 6348942720. Its totient is φ = 601475328.

The previous prime is 2163646631. The next prime is 2163646649. The reversal of 2163646632 is 2366463612.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (2163646631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167823 + ... + 180254.

It is an arithmetic number, because the mean of its divisors is an integer number (99202230).

Almost surely, 2^2163646632 is an apocalyptic number.

It is an amenable number.

2163646632 is an abundant number, since it is smaller than the sum of its proper divisors (4185296088).

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

2163646632 is a wasteful number, since it uses less digits than its factorization.

2163646632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348130 (or 348126 counting only the distinct ones).

The product of its digits is 186624, while the sum is 39.

The square root of 2163646632 is about 46515.0151241510. The cubic root of 2163646632 is about 1293.3878522973.

The spelling of 2163646632 in words is "two billion, one hundred sixty-three million, six hundred forty-six thousand, six hundred thirty-two".