2003445893 has 4 divisors (see below), whose sum is σ = 2022896928. Its totient is φ = 1983994860.

The previous prime is 2003445881. The next prime is 2003445907. The reversal of 2003445893 is 3985443002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2003445893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003445863) 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, 9725363 + ... + 9725568.

It is an arithmetic number, because the mean of its divisors is an integer number (505724232).

Almost surely, 2^2003445893 is an apocalyptic number.

It is an amenable number.

2003445893 is a deficient number, since it is larger than the sum of its proper divisors (19451035).

2003445893 is a wasteful number, since it uses less digits than its factorization.

2003445893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19451034.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 2003445893 is about 44759.8692245632. The cubic root of 2003445893 is about 1260.6442269097.

Adding to 2003445893 its reverse (3985443002), we get a palindrome (5988888895).

The spelling of 2003445893 in words is "two billion, three million, four hundred forty-five thousand, eight hundred ninety-three".