819788672 has 16 divisors (see below), whose sum is σ = 1633173000. Its totient is φ = 409894272.

The previous prime is 819788653. The next prime is 819788677. The reversal of 819788672 is 276887918.

819788672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819788677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202172 + ... + 3202427.

Almost surely, 2^819788672 is an apocalyptic number.

It is an amenable number.

819788672 is a deficient number, since it is larger than the sum of its proper divisors (813384328).

819788672 is an equidigital number, since it uses as much as digits as its factorization.

819788672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404613 (or 6404601 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 56.

The square root of 819788672 is about 28631.9519418429. The cubic root of 819788672 is about 935.9097485240.

It can be divided in two parts, 8197 and 88672, that added together give a palindrome (96869).

The spelling of 819788672 in words is "eight hundred nineteen million, seven hundred eighty-eight thousand, six hundred seventy-two".