19440303863 has 8 divisors (see below), whose sum is σ = 19733125632. Its totient is φ = 19147560696.

The previous prime is 19440303833. The next prime is 19440303871. The reversal of 19440303863 is 36830304491.

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

It is not a de Polignac number, because 19440303863 - 2¹⁰ = 19440302839 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 19440303863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19440303833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647756 + ... + 677102.

It is an arithmetic number, because the mean of its divisors is an integer number (2466640704).

Almost surely, 2^19440303863 is an apocalyptic number.

19440303863 is a deficient number, since it is larger than the sum of its proper divisors (292821769).

19440303863 is an equidigital number, since it uses as much as digits as its factorization.

19440303863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39301.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 19440303863 in words is "nineteen billion, four hundred forty million, three hundred three thousand, eight hundred sixty-three".