2003039561 has 8 divisors (see below), whose sum is σ = 2046366720. Its totient is φ = 1959742048.

The previous prime is 2003039509. The next prime is 2003039567. The reversal of 2003039561 is 1659303002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2003039561 - 2¹⁴ = 2003023177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003039567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179240 + ... + 190086.

It is an arithmetic number, because the mean of its divisors is an integer number (255795840).

Almost surely, 2^2003039561 is an apocalyptic number.

It is an amenable number.

2003039561 is a deficient number, since it is larger than the sum of its proper divisors (43327159).

2003039561 is a wasteful number, since it uses less digits than its factorization.

2003039561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14823.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 2003039561 is about 44755.3299730881. The cubic root of 2003039561 is about 1260.5589946397.

The spelling of 2003039561 in words is "two billion, three million, thirty-nine thousand, five hundred sixty-one".