2186867880 has 48 divisors (see below), whose sum is σ = 7107321780. Its totient is φ = 583164672.

The previous prime is 2186867831. The next prime is 2186867887. The reversal of 2186867880 is 887686812.

It can be written as a sum of positive squares in 2 ways, for example, as 2090867076 + 96000804 = 45726^2 + 9798^2 .

It is a super-2 number, since 2×2186867880² = 9564782249151388800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2186867887) 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 11 ways as a sum of consecutive naturals, for example, 3036957 + ... + 3037676.

Almost surely, 2^2186867880 is an apocalyptic number.

2186867880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2186867880 is an abundant number, since it is smaller than the sum of its proper divisors (4920453900).

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

2186867880 is a wasteful number, since it uses less digits than its factorization.

2186867880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074650 (or 6074643 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The square root of 2186867880 is about 46763.9591993663. The cubic root of 2186867880 is about 1297.9984742025.

The spelling of 2186867880 in words is "two billion, one hundred eighty-six million, eight hundred sixty-seven thousand, eight hundred eighty".