19822019844 has 24 divisors (see below), whose sum is σ = 50456050848. Its totient is φ = 6006672640.

The previous prime is 19822019831. The next prime is 19822019849. The reversal of 19822019844 is 44891022891.

It is a junction number, because it is equal to n+sod(n) for n = 19822019793 and 19822019802.

It is not an unprimeable number, because it can be changed into a prime (19822019849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75083277 + ... + 75083540.

It is an arithmetic number, because the mean of its divisors is an integer number (2102335452).

Almost surely, 2^19822019844 is an apocalyptic number.

It is an amenable number.

19822019844 is an abundant number, since it is smaller than the sum of its proper divisors (30634031004).

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

19822019844 is a wasteful number, since it uses less digits than its factorization.

19822019844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150166835 (or 150166833 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 19822019844 in words is "nineteen billion, eight hundred twenty-two million, nineteen thousand, eight hundred forty-four".