19305509375 has 12 divisors (see below), whose sum is σ = 24130346184. Its totient is φ = 15444405000.

The previous prime is 19305509359. The next prime is 19305509381. The reversal of 19305509375 is 57390550391.

It is not a de Polignac number, because 19305509375 - 2⁴ = 19305509359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3085757 + ... + 3092006.

It is an arithmetic number, because the mean of its divisors is an integer number (2010862182).

Almost surely, 2^19305509375 is an apocalyptic number.

19305509375 is a deficient number, since it is larger than the sum of its proper divisors (4824836809).

19305509375 is an frugal number, since it uses more digits than its factorization.

19305509375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6177788 (or 6177768 counting only the distinct ones).

The product of its (nonzero) digits is 637875, while the sum is 47.

The spelling of 19305509375 in words is "nineteen billion, three hundred five million, five hundred nine thousand, three hundred seventy-five".