19408375063 has 36 divisors (see below), whose sum is σ = 25042521816. Its totient is φ = 14873947200.

The previous prime is 19408375043. The next prime is 19408375067. The reversal of 19408375063 is 36057380491.

It is a de Polignac number, because none of the positive numbers 2^k-19408375063 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 (19408375067) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2000781 + ... + 2010457.

It is an arithmetic number, because the mean of its divisors is an integer number (695625606).

Almost surely, 2^19408375063 is an apocalyptic number.

19408375063 is a deficient number, since it is larger than the sum of its proper divisors (5634146753).

19408375063 is an equidigital number, since it uses as much as digits as its factorization.

19408375063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9824 (or 9756 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 19408375063 in words is "nineteen billion, four hundred eight million, three hundred seventy-five thousand, sixty-three".