819392386994 has 8 divisors (see below), whose sum is σ = 1229097475200. Its totient is φ = 409693228596.

The previous prime is 819392386987. The next prime is 819392387059. The reversal of 819392386994 is 499683293918.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119194 + ... + 1700405.

It is an arithmetic number, because the mean of its divisors is an integer number (153637184400).

Almost surely, 2^819392386994 is an apocalyptic number.

819392386994 is a deficient number, since it is larger than the sum of its proper divisors (409705088206).

819392386994 is a wasteful number, since it uses less digits than its factorization.

819392386994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964904.

The product of its digits is 181398528, while the sum is 71.

The spelling of 819392386994 in words is "eight hundred nineteen billion, three hundred ninety-two million, three hundred eighty-six thousand, nine hundred ninety-four".