813491342349 has 16 divisors (see below), whose sum is σ = 1239947366400. Its totient is φ = 464724128880.

The previous prime is 813491342309. The next prime is 813491342357. The reversal of 813491342349 is 943243194318.

It is not a de Polignac number, because 813491342349 - 2⁷ = 813491342221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813491342309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5258049 + ... + 5410550.

It is an arithmetic number, because the mean of its divisors is an integer number (77496710400).

Almost surely, 2^813491342349 is an apocalyptic number.

It is an amenable number.

813491342349 is a deficient number, since it is larger than the sum of its proper divisors (426456024051).

813491342349 is a wasteful number, since it uses less digits than its factorization.

813491342349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10672240.

The product of its digits is 2239488, while the sum is 51.

The spelling of 813491342349 in words is "eight hundred thirteen billion, four hundred ninety-one million, three hundred forty-two thousand, three hundred forty-nine".