1563823788 has 12 divisors (see below), whose sum is σ = 3648922200. Its totient is φ = 521274592.

The previous prime is 1563823787. The next prime is 1563823813. The reversal of 1563823788 is 8873283651.

1563823788 is digitally balanced in base 4, 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 (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1563823788.

It is not an unprimeable number, because it can be changed into a prime (1563823787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65159313 + ... + 65159336.

It is an arithmetic number, because the mean of its divisors is an integer number (304076850).

Almost surely, 2^1563823788 is an apocalyptic number.

It is an amenable number.

1563823788 is an abundant number, since it is smaller than the sum of its proper divisors (2085098412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1563823788 is a wasteful number, since it uses less digits than its factorization.

1563823788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130318656 (or 130318654 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 1563823788 is about 39545.2119478452. The cubic root of 1563823788 is about 1160.7248214786.

The spelling of 1563823788 in words is "one billion, five hundred sixty-three million, eight hundred twenty-three thousand, seven hundred eighty-eight".