1563990800 has 120 divisors (see below), whose sum is σ = 4005386496. Its totient is φ = 585502720.

The previous prime is 1563990787. The next prime is 1563990811. The reversal of 1563990800 is 80993651.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430592 + ... + 434208.

Almost surely, 2^1563990800 is an apocalyptic number.

1563990800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1563990800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002693248).

1563990800 is an abundant number, since it is smaller than the sum of its proper divisors (2441395696).

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

1563990800 is a wasteful number, since it uses less digits than its factorization.

1563990800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705 (or 3694 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 1563990800 is about 39547.3235503997. The cubic root of 1563990800 is about 1160.7661407276.

The spelling of 1563990800 in words is "one billion, five hundred sixty-three million, nine hundred ninety thousand, eight hundred".