19518704242 has 8 divisors (see below), whose sum is σ = 29471951232. Its totient is φ = 9694720500.

The previous prime is 19518704203. The next prime is 19518704311. The reversal of 19518704242 is 24240781591.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32315434 + ... + 32316037.

It is an arithmetic number, because the mean of its divisors is an integer number (3683993904).

Almost surely, 2^19518704242 is an apocalyptic number.

19518704242 is a deficient number, since it is larger than the sum of its proper divisors (9953246990).

19518704242 is a wasteful number, since it uses less digits than its factorization.

19518704242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64631624.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 19518704242 in words is "nineteen billion, five hundred eighteen million, seven hundred four thousand, two hundred forty-two".