819392386993 has 8 divisors (see below), whose sum is σ = 848164416512. Its totient is φ = 790969109616.

The previous prime is 819392386987. The next prime is 819392387059. The reversal of 819392386993 is 399683293918.

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

It is a cyclic number.

It is not a de Polignac number, because 819392386993 - 2³³ = 810802452401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (819392386933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87183255 + ... + 87192652.

It is an arithmetic number, because the mean of its divisors is an integer number (106020552064).

Almost surely, 2^819392386993 is an apocalyptic number.

It is an amenable number.

819392386993 is a deficient number, since it is larger than the sum of its proper divisors (28772029519).

819392386993 is a wasteful number, since it uses less digits than its factorization.

819392386993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174376071.

The product of its digits is 136048896, while the sum is 70.

The spelling of 819392386993 in words is "eight hundred nineteen billion, three hundred ninety-two million, three hundred eighty-six thousand, nine hundred ninety-three".