2169996180 has 192 divisors, whose sum is σ = 6966908928. Its totient is φ = 499530240.

The previous prime is 2169996133. The next prime is 2169996181. The reversal of 2169996180 is 816999612.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2169996181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2473902 + ... + 2474778.

It is an arithmetic number, because the mean of its divisors is an integer number (36285984).

Almost surely, 2^2169996180 is an apocalyptic number.

2169996180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2169996180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3483454464).

2169996180 is an abundant number, since it is smaller than the sum of its proper divisors (4796912748).

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

2169996180 is a wasteful number, since it uses less digits than its factorization.

2169996180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 51.

The square root of 2169996180 is about 46583.2177935359. The cubic root of 2169996180 is about 1294.6518306913.

The spelling of 2169996180 in words is "two billion, one hundred sixty-nine million, nine hundred ninety-six thousand, one hundred eighty".