19983188442 has 32 divisors (see below), whose sum is σ = 47149277184. Its totient is φ = 5525305200.

The previous prime is 19983188419. The next prime is 19983188443. The reversal of 19983188442 is 24488138991.

It is not an unprimeable number, because it can be changed into a prime (19983188443) 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 15 ways as a sum of consecutive naturals, for example, 7672734 + ... + 7675337.

It is an arithmetic number, because the mean of its divisors is an integer number (1473414912).

Almost surely, 2^19983188442 is an apocalyptic number.

19983188442 is an abundant number, since it is smaller than the sum of its proper divisors (27166088742).

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

19983188442 is a wasteful number, since it uses less digits than its factorization.

19983188442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15348114.

The product of its digits is 3981312, while the sum is 57.

The spelling of 19983188442 in words is "nineteen billion, nine hundred eighty-three million, one hundred eighty-eight thousand, four hundred forty-two".