2179327680 has 280 divisors, whose sum is σ = 7853397552. Its totient is φ = 573585408.

The previous prime is 2179327679. The next prime is 2179327687. The reversal of 2179327680 is 867239712.

2179327680 is a `hidden beast` number, since 217 + 93 + 276 + 80 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2179327687) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2150854 + ... + 2151866.

Almost surely, 2^2179327680 is an apocalyptic number.

2179327680 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 2179327680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3926698776).

2179327680 is an abundant number, since it is smaller than the sum of its proper divisors (5674069872).

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

2179327680 is a wasteful number, since it uses less digits than its factorization.

2179327680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 2179327680 is about 46683.2698083585. The cubic root of 2179327680 is about 1296.5049472699.

The spelling of 2179327680 in words is "two billion, one hundred seventy-nine million, three hundred twenty-seven thousand, six hundred eighty".