2111913728 has 36 divisors (see below), whose sum is σ = 4398876048. Its totient is φ = 1010042880.

The previous prime is 2111913721. The next prime is 2111913743. The reversal of 2111913728 is 8273191112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111913721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173453 + ... + 185228.

Almost surely, 2^2111913728 is an apocalyptic number.

It is an amenable number.

2111913728 is an abundant number, since it is smaller than the sum of its proper divisors (2286962320).

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

2111913728 is an equidigital number, since it uses as much as digits as its factorization.

2111913728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358720 (or 358706 counting only the distinct ones).

The product of its digits is 6048, while the sum is 35.

The square root of 2111913728 is about 45955.5625359978. The cubic root of 2111913728 is about 1282.9962620381.

The spelling of 2111913728 in words is "two billion, one hundred eleven million, nine hundred thirteen thousand, seven hundred twenty-eight".