2163508872 has 64 divisors (see below), whose sum is σ = 6506803200. Its totient is φ = 585610560.

The previous prime is 2163508871. The next prime is 2163508877. The reversal of 2163508872 is 2788053612.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2163508871) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 335704 + ... + 342087.

It is an arithmetic number, because the mean of its divisors is an integer number (101668800).

Almost surely, 2^2163508872 is an apocalyptic number.

It is an amenable number.

2163508872 is an abundant number, since it is smaller than the sum of its proper divisors (4343294328).

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

2163508872 is a wasteful number, since it uses less digits than its factorization.

2163508872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677826 (or 677822 counting only the distinct ones).

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

The square root of 2163508872 is about 46513.5342884198. The cubic root of 2163508872 is about 1293.3604015898.

The spelling of 2163508872 in words is "two billion, one hundred sixty-three million, five hundred eight thousand, eight hundred seventy-two".