19898493559 has 8 divisors (see below), whose sum is σ = 23474720768. Its totient is φ = 16505662680.

The previous prime is 19898493533. The next prime is 19898493607. The reversal of 19898493559 is 95539489891.

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 19898493559 - 2¹³ = 19898485367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19898494559) 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, 45848847 + ... + 45849280.

It is an arithmetic number, because the mean of its divisors is an integer number (2934340096).

Almost surely, 2^19898493559 is an apocalyptic number.

19898493559 is a deficient number, since it is larger than the sum of its proper divisors (3576227209).

19898493559 is an equidigital number, since it uses as much as digits as its factorization.

19898493559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91698165.

The product of its digits is 125971200, while the sum is 70.

The spelling of 19898493559 in words is "nineteen billion, eight hundred ninety-eight million, four hundred ninety-three thousand, five hundred fifty-nine".