20483803989 has 80 divisors (see below), whose sum is σ = 34116888960. Its totient is φ = 12143831040.

The previous prime is 20483803987. The next prime is 20483803997. The reversal of 20483803989 is 98930838402.

It is a happy number.

20483803989 is a `hidden beast` number, since 2 + 0 + 483 + 80 + 3 + 9 + 89 = 666.

It is not a de Polignac number, because 20483803989 - 2¹ = 20483803987 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20483803987) 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 79 ways as a sum of consecutive naturals, for example, 7690672 + ... + 7693334.

It is an arithmetic number, because the mean of its divisors is an integer number (426461112).

Almost surely, 2^20483803989 is an apocalyptic number.

It is an amenable number.

20483803989 is a deficient number, since it is larger than the sum of its proper divisors (13633084971).

20483803989 is a wasteful number, since it uses less digits than its factorization.

20483803989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872 (or 2863 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 20483803989 in words is "twenty billion, four hundred eighty-three million, eight hundred three thousand, nine hundred eighty-nine".