813418 has 8 divisors (see below), whose sum is σ = 1273248. Its totient is φ = 389004.

The previous prime is 813401. The next prime is 813419. The reversal of 813418 is 814318.

813418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 813392 and 813401.

It is not an unprimeable number, because it can be changed into a prime (813419) by changing a digit.

813418 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8796 + ... + 8887.

It is an arithmetic number, because the mean of its divisors is an integer number (159156).

2⁸¹³⁴¹⁸ is an apocalyptic number.

813418 is a deficient number, since it is larger than the sum of its proper divisors (459830).

813418 is a wasteful number, since it uses less digits than its factorization.

813418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17708.

The product of its digits is 768, while the sum is 25.

The square root of 813418 is about 901.8968898937. The cubic root of 813418 is about 93.3479087215.

Subtracting 813418 from its reverse (814318), we obtain a square (900 = 30²).

The spelling of 813418 in words is "eight hundred thirteen thousand, four hundred eighteen".