2181824468 has 12 divisors (see below), whose sum is σ = 3819157440. Its totient is φ = 1090636632.

The previous prime is 2181824431. The next prime is 2181824479. The reversal of 2181824468 is 8644281812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50546 + ... + 83177.

It is an arithmetic number, because the mean of its divisors is an integer number (318263120).

Almost surely, 2^2181824468 is an apocalyptic number.

It is an amenable number.

2181824468 is a deficient number, since it is larger than the sum of its proper divisors (1637332972).

2181824468 is a wasteful number, since it uses less digits than its factorization.

2181824468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137806 (or 137804 counting only the distinct ones).

The product of its digits is 196608, while the sum is 44.

The square root of 2181824468 is about 46710.0039391991. The cubic root of 2181824468 is about 1296.9998801179. Note that the first 3 decimals are identical.

The spelling of 2181824468 in words is "two billion, one hundred eighty-one million, eight hundred twenty-four thousand, four hundred sixty-eight".