2180444862 has 32 divisors (see below), whose sum is σ = 4483874304. Its totient is φ = 706449600.

The previous prime is 2180444843. The next prime is 2180444869. The reversal of 2180444862 is 2684440812.

It is a super-3 number, since 3×2180444862³ (a number of 29 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2180444862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180444869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50313 + ... + 83019.

It is an arithmetic number, because the mean of its divisors is an integer number (140121072).

Almost surely, 2^2180444862 is an apocalyptic number.

2180444862 is an abundant number, since it is smaller than the sum of its proper divisors (2303429442).

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

2180444862 is a wasteful number, since it uses less digits than its factorization.

2180444862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33024.

The product of its (nonzero) digits is 98304, while the sum is 39.

The square root of 2180444862 is about 46695.2338253060. The cubic root of 2180444862 is about 1296.7264505301.

It can be divided in two parts, 21804 and 44862, that added together give a palindrome (66666).

The spelling of 2180444862 in words is "two billion, one hundred eighty million, four hundred forty-four thousand, eight hundred sixty-two".