2186116780 has 24 divisors (see below), whose sum is σ = 4666107600. Its totient is φ = 860111040.

The previous prime is 2186116771. The next prime is 2186116783. The reversal of 2186116780 is 876116812.

2186116780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2186116783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894730 + ... + 897169.

It is an arithmetic number, because the mean of its divisors is an integer number (194421150).

Almost surely, 2^2186116780 is an apocalyptic number.

2186116780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2186116780 is an abundant number, since it is smaller than the sum of its proper divisors (2479990820).

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

2186116780 is a wasteful number, since it uses less digits than its factorization.

2186116780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791969 (or 1791967 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 2186116780 is about 46755.9277525321. The cubic root of 2186116780 is about 1297.8498539925.

The spelling of 2186116780 in words is "two billion, one hundred eighty-six million, one hundred sixteen thousand, seven hundred eighty".