19530375499 has 4 divisors (see below), whose sum is σ = 19540815840. Its totient is φ = 19519935160.

The previous prime is 19530375493. The next prime is 19530375521. The reversal of 19530375499 is 99457303591.

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 19530375499 - 2¹¹ = 19530373451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19530375493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5217364 + ... + 5221105.

It is an arithmetic number, because the mean of its divisors is an integer number (4885203960).

Almost surely, 2^19530375499 is an apocalyptic number.

19530375499 is a deficient number, since it is larger than the sum of its proper divisors (10440341).

19530375499 is a wasteful number, since it uses less digits than its factorization.

19530375499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10440340.

The product of its (nonzero) digits is 4592700, while the sum is 55.

The spelling of 19530375499 in words is "nineteen billion, five hundred thirty million, three hundred seventy-five thousand, four hundred ninety-nine".