2181106208 has 24 divisors (see below), whose sum is σ = 4358147472. Its totient is φ = 1074275136.

The previous prime is 2181106199. The next prime is 2181106219. The reversal of 2181106208 is 8026011812.

It is a super-2 number, since 2×2181106208² = 9514448581152278528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506510 + ... + 510797.

It is an arithmetic number, because the mean of its divisors is an integer number (181589478).

Almost surely, 2^2181106208 is an apocalyptic number.

It is an amenable number.

2181106208 is a deficient number, since it is larger than the sum of its proper divisors (2177041264).

2181106208 is a wasteful number, since it uses less digits than its factorization.

2181106208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017384 (or 1017376 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 2181106208 is about 46702.3148034442. The cubic root of 2181106208 is about 1296.8575397063.

The spelling of 2181106208 in words is "two billion, one hundred eighty-one million, one hundred six thousand, two hundred eight".