2166084396 has 144 divisors (see below), whose sum is σ = 6569902080. Its totient is φ = 615353760.

The previous prime is 2166084391. The next prime is 2166084413. The reversal of 2166084396 is 6934806612.

2166084396 is a `hidden beast` number, since 2 + 1 + 6 + 608 + 4 + 39 + 6 = 666.

It is a super-2 number, since 2×2166084396² = 9383843221189369632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2166084391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1009701 + ... + 1011843.

It is an arithmetic number, because the mean of its divisors is an integer number (45624320).

Almost surely, 2^2166084396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166084396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3284951040).

2166084396 is an abundant number, since it is smaller than the sum of its proper divisors (4403817684).

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

2166084396 is a wasteful number, since it uses less digits than its factorization.

2166084396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2346 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 2166084396 is about 46541.2118020148. The cubic root of 2166084396 is about 1293.8734200258.

The spelling of 2166084396 in words is "two billion, one hundred sixty-six million, eighty-four thousand, three hundred ninety-six".