2000203605 has 32 divisors (see below), whose sum is σ = 3560726400. Its totient is φ = 1065332736.

The previous prime is 2000203559. The next prime is 2000203613. The reversal of 2000203605 is 5063020002.

It is not a de Polignac number, because 2000203605 - 2¹⁷ = 2000072533 is a prime.

It is a super-2 number, since 2×2000203605² = 8001628922909992050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 94182 + ... + 113448.

It is an arithmetic number, because the mean of its divisors is an integer number (111272700).

Almost surely, 2^2000203605 is an apocalyptic number.

It is an amenable number.

2000203605 is a deficient number, since it is larger than the sum of its proper divisors (1560522795).

2000203605 is a wasteful number, since it uses less digits than its factorization.

2000203605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20050 (or 20044 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2000203605 is about 44723.6358651664. The cubic root of 2000203605 is about 1259.9638028150.

Adding to 2000203605 its reverse (5063020002), we get a palindrome (7063223607).

The spelling of 2000203605 in words is "two billion, two hundred three thousand, six hundred five".