1563639848 has 16 divisors (see below), whose sum is σ = 2934312480. Its totient is φ = 781156528.

The previous prime is 1563639839. The next prime is 1563639853. The reversal of 1563639848 is 8489363651.

It is a self number, because there is not a number n which added to its sum of digits gives 1563639848.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72836 + ... + 91827.

It is an arithmetic number, because the mean of its divisors is an integer number (183394530).

Almost surely, 2^1563639848 is an apocalyptic number.

It is an amenable number.

1563639848 is a deficient number, since it is larger than the sum of its proper divisors (1370672632).

1563639848 is a wasteful number, since it uses less digits than its factorization.

1563639848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165856 (or 165852 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 53.

The square root of 1563639848 is about 39542.8861870248. The cubic root of 1563639848 is about 1160.6793107894.

The spelling of 1563639848 in words is "one billion, five hundred sixty-three million, six hundred thirty-nine thousand, eight hundred forty-eight".