19484656899 has 4 divisors (see below), whose sum is σ = 25979542536. Its totient is φ = 12989771264.

The previous prime is 19484656897. The next prime is 19484656963. The reversal of 19484656899 is 99865648491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19484656899 - 2¹ = 19484656897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19484656897) 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, 3247442814 + ... + 3247442819.

It is an arithmetic number, because the mean of its divisors is an integer number (6494885634).

Almost surely, 2^19484656899 is an apocalyptic number.

19484656899 is a deficient number, since it is larger than the sum of its proper divisors (6494885637).

19484656899 is an equidigital number, since it uses as much as digits as its factorization.

19484656899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6494885636.

The product of its digits is 134369280, while the sum is 69.

The spelling of 19484656899 in words is "nineteen billion, four hundred eighty-four million, six hundred fifty-six thousand, eight hundred ninety-nine".