818541 has 12 divisors (see below), whose sum is σ = 1195168. Its totient is φ = 539784.

The previous prime is 818509. The next prime is 818561. The reversal of 818541 is 145818.

It is not a de Polignac number, because 818541 - 2⁵ = 818509 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

818541 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 818541.

It is not an unprimeable number, because it can be changed into a prime (818561) 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 11 ways as a sum of consecutive naturals, for example, 486 + ... + 1368.

2⁸¹⁸⁵⁴¹ is an apocalyptic number.

It is an amenable number.

818541 is a deficient number, since it is larger than the sum of its proper divisors (376627).

818541 is a wasteful number, since it uses less digits than its factorization.

818541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 989 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 818541 is about 904.7325571681. The cubic root of 818541 is about 93.5434706876.

The spelling of 818541 in words is "eight hundred eighteen thousand, five hundred forty-one".