19349974459 has 8 divisors (see below), whose sum is σ = 19403673120. Its totient is φ = 19296307776.

The previous prime is 19349974429. The next prime is 19349974507. The reversal of 19349974459 is 95447994391.

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

It is a cyclic number.

It is not a de Polignac number, because 19349974459 - 2⁹ = 19349973947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19349974459.

It is not an unprimeable number, because it can be changed into a prime (19349974429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684674 + ... + 1696120.

It is an arithmetic number, because the mean of its divisors is an integer number (2425459140).

Almost surely, 2^19349974459 is an apocalyptic number.

19349974459 is a deficient number, since it is larger than the sum of its proper divisors (53698661).

19349974459 is a wasteful number, since it uses less digits than its factorization.

19349974459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15989.

The product of its digits is 44089920, while the sum is 64.

The spelling of 19349974459 in words is "nineteen billion, three hundred forty-nine million, nine hundred seventy-four thousand, four hundred fifty-nine".