1563983604 has 72 divisors (see below), whose sum is σ = 4095716352. Its totient is φ = 502683840.

The previous prime is 1563983593. The next prime is 1563983611. The reversal of 1563983604 is 4063893651.

1563983604 is a `hidden beast` number, since 1 + 5 + 6 + 39 + 8 + 3 + 604 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1563983604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324597 + ... + 329379.

Almost surely, 2^1563983604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1563983604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2047858176).

1563983604 is an abundant number, since it is smaller than the sum of its proper divisors (2531732748).

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

1563983604 is a wasteful number, since it uses less digits than its factorization.

1563983604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117 (or 5112 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1563983604 is about 39547.2325706869. The cubic root of 1563983604 is about 1160.7643604771.

The spelling of 1563983604 in words is "one billion, five hundred sixty-three million, nine hundred eighty-three thousand, six hundred four".