813018 has 16 divisors (see below), whose sum is σ = 1637280. Its totient is φ = 269136.

The previous prime is 813017. The next prime is 813023. The reversal of 813018 is 810318.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 812985 and 813003.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 813018.

It is not an unprimeable number, because it can be changed into a prime (813013) 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, 696 + ... + 1452.

It is an arithmetic number, because the mean of its divisors is an integer number (102330).

2⁸¹³⁰¹⁸ is an apocalyptic number.

813018 is an abundant number, since it is smaller than the sum of its proper divisors (824262).

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

813018 is a wasteful number, since it uses less digits than its factorization.

813018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 813018 is about 901.6751077855. The cubic root of 813018 is about 93.3326048696.

The spelling of 813018 in words is "eight hundred thirteen thousand, eighteen".