818523361 has 32 divisors (see below), whose sum is σ = 929605248. Its totient is φ = 717050880.

The previous prime is 818523331. The next prime is 818523367. The reversal of 818523361 is 163325818.

It is a cyclic number.

It is not a de Polignac number, because 818523361 - 2¹⁹ = 817999073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 818523361.

It is not an unprimeable number, because it can be changed into a prime (818523367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1433206 + ... + 1433776.

It is an arithmetic number, because the mean of its divisors is an integer number (29050164).

Almost surely, 2^818523361 is an apocalyptic number.

It is an amenable number.

818523361 is a deficient number, since it is larger than the sum of its proper divisors (111081887).

818523361 is a wasteful number, since it uses less digits than its factorization.

818523361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721.

The product of its digits is 34560, while the sum is 37.

The square root of 818523361 is about 28609.8472732729. The cubic root of 818523361 is about 935.4279875015.

The spelling of 818523361 in words is "eight hundred eighteen million, five hundred twenty-three thousand, three hundred sixty-one".