2103491712 has 128 divisors (see below), whose sum is σ = 6400051200. Its totient is φ = 599639040.

The previous prime is 2103491711. The next prime is 2103491737. The reversal of 2103491712 is 2171943012.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-4 number, since 4×2103491712⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2103491712.

It is not an unprimeable number, because it can be changed into a prime (2103491711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2308537 + ... + 2309447.

It is an arithmetic number, because the mean of its divisors is an integer number (50000400).

Almost surely, 2^2103491712 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 2103491712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3200025600).

2103491712 is an abundant number, since it is smaller than the sum of its proper divisors (4296559488).

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

2103491712 is an equidigital number, since it uses as much as digits as its factorization.

2103491712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794 (or 1782 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2103491712 is about 45863.8388275556. The cubic root of 2103491712 is about 1281.2885201760.

The spelling of 2103491712 in words is "two billion, one hundred three million, four hundred ninety-one thousand, seven hundred twelve".