19390813463 has 6 divisors (see below), whose sum is σ = 22556660616. Its totient is φ = 16620697212.

The previous prime is 19390813459. The next prime is 19390813531. The reversal of 19390813463 is 36431809391.

It is not a de Polignac number, because 19390813463 - 2² = 19390813459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19398813463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197865395 + ... + 197865492.

It is an arithmetic number, because the mean of its divisors is an integer number (3759443436).

Almost surely, 2^19390813463 is an apocalyptic number.

19390813463 is a deficient number, since it is larger than the sum of its proper divisors (3165847153).

19390813463 is an equidigital number, since it uses as much as digits as its factorization.

19390813463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395730901 (or 395730894 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 19390813463 in words is "nineteen billion, three hundred ninety million, eight hundred thirteen thousand, four hundred sixty-three".