1563324641 has 16 divisors (see below), whose sum is σ = 1696464000. Its totient is φ = 1434870528.

The previous prime is 1563324611. The next prime is 1563324649. The reversal of 1563324641 is 1464233651.

It is a cyclic number.

It is not a de Polignac number, because 1563324641 - 2⁶ = 1563324577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1563324649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612035 + ... + 614583.

It is an arithmetic number, because the mean of its divisors is an integer number (106029000).

Almost surely, 2^1563324641 is an apocalyptic number.

It is an amenable number.

1563324641 is a deficient number, since it is larger than the sum of its proper divisors (133139359).

1563324641 is a wasteful number, since it uses less digits than its factorization.

1563324641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448.

The product of its digits is 51840, while the sum is 35.

The square root of 1563324641 is about 39538.9003514261. The cubic root of 1563324641 is about 1160.6013135383.

The spelling of 1563324641 in words is "one billion, five hundred sixty-three million, three hundred twenty-four thousand, six hundred forty-one".