19999119394 has 8 divisors (see below), whose sum is σ = 29999298240. Its totient is φ = 9999353316.

The previous prime is 19999119353. The next prime is 19999119397. The reversal of 19999119394 is 49391199991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19999119397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91107 + ... + 219769.

It is an arithmetic number, because the mean of its divisors is an integer number (3749912280).

Almost surely, 2^19999119394 is an apocalyptic number.

19999119394 is a deficient number, since it is larger than the sum of its proper divisors (10000178846).

19999119394 is a wasteful number, since it uses less digits than its factorization.

19999119394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206384.

The product of its digits is 6377292, while the sum is 64.

The spelling of 19999119394 in words is "nineteen billion, nine hundred ninety-nine million, one hundred nineteen thousand, three hundred ninety-four".