2103544520 has 192 divisors, whose sum is σ = 6148612800. Its totient is φ = 640120320.

The previous prime is 2103544519. The next prime is 2103544537. The reversal of 2103544520 is 254453012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103544520.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 925946 + ... + 928214.

It is an arithmetic number, because the mean of its divisors is an integer number (32024025).

Almost surely, 2^2103544520 is an apocalyptic number.

2103544520 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 2103544520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3074306400).

2103544520 is an abundant number, since it is smaller than the sum of its proper divisors (4045068280).

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

2103544520 is a wasteful number, since it uses less digits than its factorization.

2103544520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348 (or 2337 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2103544520 is about 45864.4145280412. The cubic root of 2103544520 is about 1281.2992423034.

Adding to 2103544520 its reverse (254453012), we get a palindrome (2357997532).

The spelling of 2103544520 in words is "two billion, one hundred three million, five hundred forty-four thousand, five hundred twenty".