2186488081 has 12 divisors (see below), whose sum is σ = 2247755328. Its totient is φ = 2126793992.

The previous prime is 2186488069. The next prime is 2186488103. The reversal of 2186488081 is 1808846812.

It is not a de Polignac number, because 2186488081 - 2²⁵ = 2152933649 is a prime.

It is a super-2 number, since 2×2186488081² = 9561460256710125122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2186488981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 365940 + ... + 371866.

It is an arithmetic number, because the mean of its divisors is an integer number (187312944).

Almost surely, 2^2186488081 is an apocalyptic number.

It is an amenable number.

2186488081 is a deficient number, since it is larger than the sum of its proper divisors (61267247).

2186488081 is an equidigital number, since it uses as much as digits as its factorization.

2186488081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6188 (or 6141 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 46.

The square root of 2186488081 is about 46759.8982141749. The cubic root of 2186488081 is about 1297.9233276015.

The spelling of 2186488081 in words is "two billion, one hundred eighty-six million, four hundred eighty-eight thousand, eighty-one".