19019140198 has 16 divisors (see below), whose sum is σ = 29197656576. Its totient is φ = 9286671240.

The previous prime is 19019140187. The next prime is 19019140199. The reversal of 19019140198 is 89104191091.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19019140199) 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, 520963 + ... + 556273.

It is an arithmetic number, because the mean of its divisors is an integer number (1824853536).

Almost surely, 2^19019140198 is an apocalyptic number.

19019140198 is a deficient number, since it is larger than the sum of its proper divisors (10178516378).

19019140198 is a wasteful number, since it uses less digits than its factorization.

19019140198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41619.

The product of its (nonzero) digits is 23328, while the sum is 43.

The spelling of 19019140198 in words is "nineteen billion, nineteen million, one hundred forty thousand, one hundred ninety-eight".