2180244808 has 24 divisors (see below), whose sum is σ = 4755381750. Its totient is φ = 934390464.

The previous prime is 2180244799. The next prime is 2180244809. The reversal of 2180244808 is 8084420812.

It can be written as a sum of positive squares in only one way, i.e., 1164037924 + 1016206884 = 34118^2 + 31878^2 .

It is not an unprimeable number, because it can be changed into a prime (2180244809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2780533 + ... + 2781316.

Almost surely, 2^2180244808 is an apocalyptic number.

2180244808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2180244808 is an abundant number, since it is smaller than the sum of its proper divisors (2575136942).

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

2180244808 is a wasteful number, since it uses less digits than its factorization.

2180244808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561869 (or 5561858 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 37.

The square root of 2180244808 is about 46693.0916517636. The cubic root of 2180244808 is about 1296.6867914600.

The spelling of 2180244808 in words is "two billion, one hundred eighty million, two hundred forty-four thousand, eight hundred eight".