19198842 has 32 divisors (see below), whose sum is σ = 42239232. Its totient is φ = 5780544.

The previous prime is 19198801. The next prime is 19198847. The reversal of 19198842 is 24889191.

It is a junction number, because it is equal to n+sod(n) for n = 19198794 and 19198803.

It is not an unprimeable number, because it can be changed into a prime (19198847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048 + ... + 6284.

It is an arithmetic number, because the mean of its divisors is an integer number (1319976).

Almost surely, 2^19198842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19198842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21119616).

19198842 is an abundant number, since it is smaller than the sum of its proper divisors (23040390).

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

19198842 is a wasteful number, since it uses less digits than its factorization.

19198842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302.

The product of its digits is 41472, while the sum is 42.

The square root of 19198842 is about 4381.6483199819. The cubic root of 19198842 is about 267.7677965680.

The spelling of 19198842 in words is "nineteen million, one hundred ninety-eight thousand, eight hundred forty-two".