2003205045 has 32 divisors (see below), whose sum is σ = 3256388352. Its totient is φ = 1051356672.

The previous prime is 2003205031. The next prime is 2003205053. The reversal of 2003205045 is 5405023002.

It is not a de Polignac number, because 2003205045 - 2¹¹ = 2003202997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548967 + ... + 552603.

It is an arithmetic number, because the mean of its divisors is an integer number (101762136).

Almost surely, 2^2003205045 is an apocalyptic number.

It is an amenable number.

2003205045 is a deficient number, since it is larger than the sum of its proper divisors (1253183307).

2003205045 is a wasteful number, since it uses less digits than its factorization.

2003205045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 2003205045 is about 44757.1786979474. The cubic root of 2003205045 is about 1260.5937079830.

Adding to 2003205045 its reverse (5405023002), we get a palindrome (7408228047).

The spelling of 2003205045 in words is "two billion, three million, two hundred five thousand, forty-five".