2003443045 has 16 divisors (see below), whose sum is σ = 2518737408. Its totient is φ = 1527894720.

The previous prime is 2003443031. The next prime is 2003443067. The reversal of 2003443045 is 5403443002.

It is not a de Polignac number, because 2003443045 - 2⁹ = 2003442533 is a prime.

It is a Duffinian number.

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, 86074 + ... + 106843.

It is an arithmetic number, because the mean of its divisors is an integer number (157421088).

Almost surely, 2^2003443045 is an apocalyptic number.

It is an amenable number.

2003443045 is a deficient number, since it is larger than the sum of its proper divisors (515294363).

2003443045 is a wasteful number, since it uses less digits than its factorization.

2003443045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193020.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 2003443045 is about 44759.8374103392. The cubic root of 2003443045 is about 1260.6436295529.

Adding to 2003443045 its reverse (5403443002), we get a palindrome (7406886047).

The spelling of 2003443045 in words is "two billion, three million, four hundred forty-three thousand, forty-five".