2168053644 has 12 divisors (see below), whose sum is σ = 5058791864. Its totient is φ = 722684544.

The previous prime is 2168053561. The next prime is 2168053687. The reversal of 2168053644 is 4463508612.

2168053644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 90335557 + ... + 90335580.

Almost surely, 2^2168053644 is an apocalyptic number.

It is an amenable number.

2168053644 is an abundant number, since it is smaller than the sum of its proper divisors (2890738220).

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

2168053644 is a wasteful number, since it uses less digits than its factorization.

2168053644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180671144 (or 180671142 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 2168053644 is about 46562.3629555030. The cubic root of 2168053644 is about 1294.2654001196.

The spelling of 2168053644 in words is "two billion, one hundred sixty-eight million, fifty-three thousand, six hundred forty-four".