19105500194 has 16 divisors (see below), whose sum is σ = 31990606560. Its totient is φ = 8482356960.

The previous prime is 19105500191. The next prime is 19105500221. The reversal of 19105500194 is 49100550191.

It is not an unprimeable number, because it can be changed into a prime (19105500191) 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, 10097099 + ... + 10098990.

It is an arithmetic number, because the mean of its divisors is an integer number (1999412910).

Almost surely, 2^19105500194 is an apocalyptic number.

19105500194 is a deficient number, since it is larger than the sum of its proper divisors (12885106366).

19105500194 is a wasteful number, since it uses less digits than its factorization.

19105500194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20196145.

The product of its (nonzero) digits is 8100, while the sum is 35.

The spelling of 19105500194 in words is "nineteen billion, one hundred five million, five hundred thousand, one hundred ninety-four".