2003105456 has 40 divisors (see below), whose sum is σ = 4255401744. Its totient is φ = 905864960.

The previous prime is 2003105453. The next prime is 2003105477. The reversal of 2003105456 is 6545013002.

It is not an unprimeable number, because it can be changed into a prime (2003105453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5786 + ... + 63558.

Almost surely, 2^2003105456 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 2003105456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2127700872).

2003105456 is an abundant number, since it is smaller than the sum of its proper divisors (2252296288).

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

2003105456 is a wasteful number, since it uses less digits than its factorization.

2003105456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57989 (or 57983 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2003105456 is about 44756.0661363351. The cubic root of 2003105456 is about 1260.5728175692.

Adding to 2003105456 its reverse (6545013002), we get a palindrome (8548118458).

The spelling of 2003105456 in words is "two billion, three million, one hundred five thousand, four hundred fifty-six".