818841 has 8 divisors (see below), whose sum is σ = 1107040. Its totient is φ = 538272.

The previous prime is 818837. The next prime is 818887. The reversal of 818841 is 148818.

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

It is not a de Polignac number, because 818841 - 2² = 818837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 818799 and 818808.

It is not an unprimeable number, because it can be changed into a prime (818821) 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, 1651 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (138380).

2⁸¹⁸⁸⁴¹ is an apocalyptic number.

It is an amenable number.

818841 is a deficient number, since it is larger than the sum of its proper divisors (288199).

818841 is a wasteful number, since it uses less digits than its factorization.

818841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815.

The product of its digits is 2048, while the sum is 30.

The square root of 818841 is about 904.8983368313. The cubic root of 818841 is about 93.5548973657.

The spelling of 818841 in words is "eight hundred eighteen thousand, eight hundred forty-one".