818395 has 4 divisors (see below), whose sum is σ = 982080. Its totient is φ = 654712.

The previous prime is 818393. The next prime is 818399. The reversal of 818395 is 593818.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 593818 = 2 ⋅296909.

It is a cyclic number.

It is not a de Polignac number, because 818395 - 2¹ = 818393 is a prime.

818395 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 818395.

It is not an unprimeable number, because it can be changed into a prime (818393) 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, 81835 + ... + 81844.

It is an arithmetic number, because the mean of its divisors is an integer number (245520).

2⁸¹⁸³⁹⁵ is an apocalyptic number.

818395 is a deficient number, since it is larger than the sum of its proper divisors (163685).

818395 is a wasteful number, since it uses less digits than its factorization.

818395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163684.

The product of its digits is 8640, while the sum is 34.

The square root of 818395 is about 904.6518667421. The cubic root of 818395 is about 93.5379086943.

The spelling of 818395 in words is "eight hundred eighteen thousand, three hundred ninety-five".