2186390332 has 48 divisors (see below), whose sum is σ = 4640993280. Its totient is φ = 879812352.

The previous prime is 2186390299. The next prime is 2186390357. The reversal of 2186390332 is 2330936812.

It is a junction number, because it is equal to n+sod(n) for n = 2186390291 and 2186390300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203733 + ... + 214195.

It is an arithmetic number, because the mean of its divisors is an integer number (96687360).

Almost surely, 2^2186390332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2186390332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2320496640).

2186390332 is an abundant number, since it is smaller than the sum of its proper divisors (2454602948).

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

2186390332 is a wasteful number, since it uses less digits than its factorization.

2186390332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10930 (or 10928 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 2186390332 is about 46758.8529799438. The cubic root of 2186390332 is about 1297.9039856868.

The spelling of 2186390332 in words is "two billion, one hundred eighty-six million, three hundred ninety thousand, three hundred thirty-two".