2172836180 has 24 divisors (see below), whose sum is σ = 4583427072. Its totient is φ = 865235232.

The previous prime is 2172836173. The next prime is 2172836201. The reversal of 2172836180 is 816382712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239132 + ... + 248051.

It is an arithmetic number, because the mean of its divisors is an integer number (190976128).

Almost surely, 2^2172836180 is an apocalyptic number.

2172836180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172836180 is an abundant number, since it is smaller than the sum of its proper divisors (2410590892).

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

2172836180 is a wasteful number, since it uses less digits than its factorization.

2172836180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487415 (or 487413 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 2172836180 is about 46613.6909072860. The cubic root of 2172836180 is about 1295.2163798181.

The spelling of 2172836180 in words is "two billion, one hundred seventy-two million, eight hundred thirty-six thousand, one hundred eighty".