819681803349 has 8 divisors (see below), whose sum is σ = 1100771726880. Its totient is φ = 542523207696.

The previous prime is 819681803341. The next prime is 819681803401. The reversal of 819681803349 is 943308186918.

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

It is not a de Polignac number, because 819681803349 - 2³ = 819681803341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 819681803292 and 819681803301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819681803341) 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, 982831482 + ... + 982832315.

It is an arithmetic number, because the mean of its divisors is an integer number (137596465860).

Almost surely, 2^819681803349 is an apocalyptic number.

It is an amenable number.

819681803349 is a deficient number, since it is larger than the sum of its proper divisors (281089923531).

819681803349 is a wasteful number, since it uses less digits than its factorization.

819681803349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965663939.

The product of its (nonzero) digits is 8957952, while the sum is 60.

The spelling of 819681803349 in words is "eight hundred nineteen billion, six hundred eighty-one million, eight hundred three thousand, three hundred forty-nine".