813418133 has 8 divisors (see below), whose sum is σ = 888323520. Its totient is φ = 738672480.

The previous prime is 813418121. The next prime is 813418211. The reversal of 813418133 is 331814318.

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 813418133 - 2⁴ = 813418117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 813418133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813418933) 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, 29153 + ... + 49766.

It is an arithmetic number, because the mean of its divisors is an integer number (111040440).

Almost surely, 2^813418133 is an apocalyptic number.

It is an amenable number.

813418133 is a deficient number, since it is larger than the sum of its proper divisors (74905387).

813418133 is a wasteful number, since it uses less digits than its factorization.

813418133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79867.

The product of its digits is 6912, while the sum is 32.

The square root of 813418133 is about 28520.4861985205. The cubic root of 813418133 is about 933.4791380915.

The spelling of 813418133 in words is "eight hundred thirteen million, four hundred eighteen thousand, one hundred thirty-three".