2103491920 has 80 divisors (see below), whose sum is σ = 4984680960. Its totient is φ = 825357312.

The previous prime is 2103491911. The next prime is 2103491947. The reversal of 2103491920 is 291943012.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054444 + ... + 1056436.

It is an arithmetic number, because the mean of its divisors is an integer number (62308512).

Almost surely, 2^2103491920 is an apocalyptic number.

2103491920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2103491920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2492340480).

2103491920 is an abundant number, since it is smaller than the sum of its proper divisors (2881189040).

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

2103491920 is a wasteful number, since it uses less digits than its factorization.

2103491920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252 (or 2246 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2103491920 is about 45863.8410951372. The cubic root of 2103491920 is about 1281.2885624087.

The spelling of 2103491920 in words is "two billion, one hundred three million, four hundred ninety-one thousand, nine hundred twenty".