2002021803 has 12 divisors (see below), whose sum is σ = 2924302680. Its totient is φ = 1319684256.

The previous prime is 2002021771. The next prime is 2002021817. The reversal of 2002021803 is 3081202002.

It is a happy number.

It is not a de Polignac number, because 2002021803 - 2⁵ = 2002021771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2002021843) 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 11 ways as a sum of consecutive naturals, for example, 1248901 + ... + 1250502.

It is an arithmetic number, because the mean of its divisors is an integer number (243691890).

Almost surely, 2^2002021803 is an apocalyptic number.

2002021803 is a deficient number, since it is larger than the sum of its proper divisors (922280877).

2002021803 is a wasteful number, since it uses less digits than its factorization.

2002021803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499498 (or 2499495 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2002021803 is about 44743.9582848903. The cubic root of 2002021803 is about 1260.3454589415.

Adding to 2002021803 its reverse (3081202002), we get a palindrome (5083223805).

The spelling of 2002021803 in words is "two billion, two million, twenty-one thousand, eight hundred three".