818285961 has 16 divisors (see below), whose sum is σ = 1105929216. Its totient is φ = 538104336.

The previous prime is 818285959. The next prime is 818285971. The reversal of 818285961 is 169582818.

It is not a de Polignac number, because 818285961 - 2¹ = 818285959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 818285961.

It is not an unprimeable number, because it can be changed into a prime (818285971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182796 + ... + 187218.

It is an arithmetic number, because the mean of its divisors is an integer number (69120576).

Almost surely, 2^818285961 is an apocalyptic number.

It is an amenable number.

818285961 is a deficient number, since it is larger than the sum of its proper divisors (287643255).

818285961 is a wasteful number, since it uses less digits than its factorization.

818285961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5252.

The product of its digits is 276480, while the sum is 48.

The square root of 818285961 is about 28605.6980512624. The cubic root of 818285961 is about 935.3375432993.

The spelling of 818285961 in words is "eight hundred eighteen million, two hundred eighty-five thousand, nine hundred sixty-one".