2161186016 has 24 divisors (see below), whose sum is σ = 4641638904. Its totient is φ = 982357120.

The previous prime is 2161186009. The next prime is 2161186031. The reversal of 2161186016 is 6106811612.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3069515 + ... + 3070218.

It is an arithmetic number, because the mean of its divisors is an integer number (193401621).

Almost surely, 2^2161186016 is an apocalyptic number.

It is an amenable number.

2161186016 is an abundant number, since it is smaller than the sum of its proper divisors (2480452888).

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

2161186016 is a wasteful number, since it uses less digits than its factorization.

2161186016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139754 (or 6139746 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 2161186016 is about 46488.5579040693. The cubic root of 2161186016 is about 1292.8973627678.

Adding to 2161186016 its reverse (6106811612), we get a palindrome (8267997628).

The spelling of 2161186016 in words is "two billion, one hundred sixty-one million, one hundred eighty-six thousand, sixteen".