813969318 has 8 divisors (see below), whose sum is σ = 1627938648. Its totient is φ = 271323104.

The previous prime is 813969307. The next prime is 813969319.

813969318 is nontrivially palindromic in base 10.

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

813969318 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813969319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67830771 + ... + 67830782.

It is an arithmetic number, because the mean of its divisors is an integer number (203492331).

Almost surely, 2^813969318 is an apocalyptic number.

813969318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813969318 is a wasteful number, since it uses less digits than its factorization.

813969318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135661558.

The product of its digits is 279936, while the sum is 48.

The square root of 813969318 is about 28530.1475285355. The cubic root of 813969318 is about 933.6899372307.

The spelling of 813969318 in words is "eight hundred thirteen million, nine hundred sixty-nine thousand, three hundred eighteen".