2040320545 has 16 divisors (see below), whose sum is σ = 2511146880. Its totient is φ = 1590591744.

The previous prime is 2040320531. The next prime is 2040320573. The reversal of 2040320545 is 5450230402.

It is a cyclic number.

It is not a de Polignac number, because 2040320545 - 2⁷ = 2040320417 is a prime.

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, 83577 + ... + 105193.

It is an arithmetic number, because the mean of its divisors is an integer number (156946680).

Almost surely, 2^2040320545 is an apocalyptic number.

It is an amenable number.

2040320545 is a deficient number, since it is larger than the sum of its proper divisors (470826335).

2040320545 is a wasteful number, since it uses less digits than its factorization.

2040320545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22104.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 2040320545 is about 45169.9075159558. The cubic root of 2040320545 is about 1268.3315650571.

Adding to 2040320545 its reverse (5450230402), we get a palindrome (7490550947).

The spelling of 2040320545 in words is "two billion, forty million, three hundred twenty thousand, five hundred forty-five".