2003859081 has 40 divisors (see below), whose sum is σ = 3539046720. Its totient is φ = 1105568352.

The previous prime is 2003859079. The next prime is 2003859097. The reversal of 2003859081 is 1809583002.

It is not a de Polignac number, because 2003859081 - 2¹ = 2003859079 is a prime.

It is a super-2 number, since 2×2003859081² = 8030902433012329122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2003859041) 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 39 ways as a sum of consecutive naturals, for example, 44491 + ... + 77376.

It is an arithmetic number, because the mean of its divisors is an integer number (88476168).

Almost surely, 2^2003859081 is an apocalyptic number.

2003859081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2003859081 is a deficient number, since it is larger than the sum of its proper divisors (1535187639).

2003859081 is a wasteful number, since it uses less digits than its factorization.

2003859081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121915 (or 121906 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 2003859081 is about 44764.4845943746. The cubic root of 2003859081 is about 1260.7308854787.

The spelling of 2003859081 in words is "two billion, three million, eight hundred fifty-nine thousand, eighty-one".