2003939545 has 4 divisors (see below), whose sum is σ = 2404727460. Its totient is φ = 1603151632.

The previous prime is 2003939521. The next prime is 2003939599. The reversal of 2003939545 is 5459393002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1504819264 + 499120281 = 38792^2 + 22341^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003939545 - 2²³ = 1995550937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2003939498 and 2003939507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200393950 + ... + 200393959.

It is an arithmetic number, because the mean of its divisors is an integer number (601181865).

Almost surely, 2^2003939545 is an apocalyptic number.

It is an amenable number.

2003939545 is a deficient number, since it is larger than the sum of its proper divisors (400787915).

2003939545 is an equidigital number, since it uses as much as digits as its factorization.

2003939545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400787914.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 2003939545 is about 44765.3833335536. The cubic root of 2003939545 is about 1260.7477599341.

The spelling of 2003939545 in words is "two billion, three million, nine hundred thirty-nine thousand, five hundred forty-five".