818303872 has 16 divisors (see below), whose sum is σ = 1630215000. Its totient is φ = 409151872.

The previous prime is 818303861. The next prime is 818303903. The reversal of 818303872 is 278303818.

It is a tau number, because it is divible by the number of its divisors (16).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3196372 + ... + 3196627.

Almost surely, 2^818303872 is an apocalyptic number.

It is an amenable number.

818303872 is a deficient number, since it is larger than the sum of its proper divisors (811911128).

818303872 is an equidigital number, since it uses as much as digits as its factorization.

818303872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6393013 (or 6393001 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 818303872 is about 28606.0111165468. The cubic root of 818303872 is about 935.3443676082.

The spelling of 818303872 in words is "eight hundred eighteen million, three hundred three thousand, eight hundred seventy-two".