19982782020 has 48 divisors (see below), whose sum is σ = 56718264960. Its totient is φ = 5255744256.

The previous prime is 19982781997. The next prime is 19982782033. The reversal of 19982782020 is 2028728991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2276760 + ... + 2285519.

It is an arithmetic number, because the mean of its divisors is an integer number (1181630520).

Almost surely, 2^19982782020 is an apocalyptic number.

19982782020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19982782020 is an abundant number, since it is smaller than the sum of its proper divisors (36735482940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19982782020 is a wasteful number, since it uses less digits than its factorization.

19982782020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562364 (or 4562362 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 19982782020 in words is "nineteen billion, nine hundred eighty-two million, seven hundred eighty-two thousand, twenty".