2160804780 has 144 divisors (see below), whose sum is σ = 6791226624. Its totient is φ = 555540480.

The previous prime is 2160804733. The next prime is 2160804781. The reversal of 2160804780 is 874080612.

2160804780 is a `hidden beast` number, since 2 + 1 + 608 + 0 + 47 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2160804781) 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 47 ways as a sum of consecutive naturals, for example, 1969192 + ... + 1970288.

It is an arithmetic number, because the mean of its divisors is an integer number (47161296).

Almost surely, 2^2160804780 is an apocalyptic number.

2160804780 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 2160804780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3395613312).

2160804780 is an abundant number, since it is smaller than the sum of its proper divisors (4630421844).

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

2160804780 is a wasteful number, since it uses less digits than its factorization.

2160804780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 2160804780 is about 46484.4574024480. The cubic root of 2160804780 is about 1292.8213353766.

The spelling of 2160804780 in words is "two billion, one hundred sixty million, eight hundred four thousand, seven hundred eighty".