2045430403 has 4 divisors (see below), whose sum is σ = 2045579400. Its totient is φ = 2045281408.

The previous prime is 2045430391. The next prime is 2045430419. The reversal of 2045430403 is 3040345402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2045430403 - 2⁵ = 2045430371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2045430473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51550 + ... + 82147.

It is an arithmetic number, because the mean of its divisors is an integer number (511394850).

Almost surely, 2^2045430403 is an apocalyptic number.

2045430403 is a deficient number, since it is larger than the sum of its proper divisors (148997).

2045430403 is a wasteful number, since it uses less digits than its factorization.

2045430403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148996.

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

The square root of 2045430403 is about 45226.4347809995. The cubic root of 2045430403 is about 1269.3895019759.

Adding to 2045430403 its reverse (3040345402), we get a palindrome (5085775805).

The spelling of 2045430403 in words is "two billion, forty-five million, four hundred thirty thousand, four hundred three".