2186616460 has 48 divisors (see below), whose sum is σ = 5270481216. Its totient is φ = 746468352.

The previous prime is 2186616457. The next prime is 2186616473. The reversal of 2186616460 is 646166812.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 897 + ... + 66136.

It is an arithmetic number, because the mean of its divisors is an integer number (109801692).

Almost surely, 2^2186616460 is an apocalyptic number.

2186616460 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 2186616460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635240608).

2186616460 is an abundant number, since it is smaller than the sum of its proper divisors (3083864756).

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

2186616460 is a wasteful number, since it uses less digits than its factorization.

2186616460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67282 (or 67280 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 2186616460 is about 46761.2709408117. The cubic root of 2186616460 is about 1297.9487294989.

The spelling of 2186616460 in words is "two billion, one hundred eighty-six million, six hundred sixteen thousand, four hundred sixty".