19821802002 has 16 divisors (see below), whose sum is σ = 40014106272. Its totient is φ = 6545516960.

The previous prime is 19821801959. The next prime is 19821802019. The reversal of 19821802002 is 20020812891.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15436899 + ... + 15438182.

It is an arithmetic number, because the mean of its divisors is an integer number (2500881642).

Almost surely, 2^19821802002 is an apocalyptic number.

19821802002 is an abundant number, since it is smaller than the sum of its proper divisors (20192304270).

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

19821802002 is a wasteful number, since it uses less digits than its factorization.

19821802002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30875193.

The product of its (nonzero) digits is 4608, while the sum is 33.

The spelling of 19821802002 in words is "nineteen billion, eight hundred twenty-one million, eight hundred two thousand, two".