1563996924 has 120 divisors (see below), whose sum is σ = 4687907840. Its totient is φ = 445401504.

The previous prime is 1563996901. The next prime is 1563996937. The reversal of 1563996924 is 4296993651.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 831417 + ... + 833295.

Almost surely, 2^1563996924 is an apocalyptic number.

1563996924 is a gapful number since it is divisible by the number (14) 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 1563996924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2343953920).

1563996924 is an abundant number, since it is smaller than the sum of its proper divisors (3123910916).

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

1563996924 is a wasteful number, since it uses less digits than its factorization.

1563996924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269 (or 2258 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 1563996924 is about 39547.4009765496. The cubic root of 1563996924 is about 1160.7676557669.

The spelling of 1563996924 in words is "one billion, five hundred sixty-three million, nine hundred ninety-six thousand, nine hundred twenty-four".