2163887412 has 12 divisors (see below), whose sum is σ = 5049070656. Its totient is φ = 721295800.

The previous prime is 2163887329. The next prime is 2163887431. The reversal of 2163887412 is 2147883612.

It is a tau number, because it is divible by the number of its divisors (12).

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, 90161964 + ... + 90161987.

It is an arithmetic number, because the mean of its divisors is an integer number (420755888).

Almost surely, 2^2163887412 is an apocalyptic number.

It is an amenable number.

2163887412 is an abundant number, since it is smaller than the sum of its proper divisors (2885183244).

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

2163887412 is a wasteful number, since it uses less digits than its factorization.

2163887412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180323958 (or 180323956 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 2163887412 is about 46517.6032486628. The cubic root of 2163887412 is about 1293.4358284580.

The spelling of 2163887412 in words is "two billion, one hundred sixty-three million, eight hundred eighty-seven thousand, four hundred twelve".