19422281844 has 96 divisors (see below), whose sum is σ = 58633424640. Its totient is φ = 5444509824.

The previous prime is 19422281807. The next prime is 19422281849. The reversal of 19422281844 is 44818222491.

It is a self number, because there is not a number n which added to its sum of digits gives 19422281844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19422281849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202299 + ... + 282434.

It is an arithmetic number, because the mean of its divisors is an integer number (610764840).

Almost surely, 2^19422281844 is an apocalyptic number.

19422281844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19422281844 is an abundant number, since it is smaller than the sum of its proper divisors (39211142796).

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

19422281844 is a wasteful number, since it uses less digits than its factorization.

19422281844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484806 (or 484798 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The spelling of 19422281844 in words is "nineteen billion, four hundred twenty-two million, two hundred eighty-one thousand, eight hundred forty-four".