1563613604 has 24 divisors (see below), whose sum is σ = 3140661888. Its totient is φ = 667241280.

The previous prime is 1563613537. The next prime is 1563613609. The reversal of 1563613604 is 4063163651.

It is a super-2 number, since 2×1563613604² = 4889775005227737632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1563613609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113312 + ... + 126359.

It is an arithmetic number, because the mean of its divisors is an integer number (130860912).

Almost surely, 2^1563613604 is an apocalyptic number.

1563613604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1563613604 is an abundant number, since it is smaller than the sum of its proper divisors (1577048284).

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

1563613604 is a wasteful number, since it uses less digits than its factorization.

1563613604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239915 (or 239913 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1563613604 is about 39542.5543433906. The cubic root of 1563613604 is about 1160.6728171717.

The spelling of 1563613604 in words is "one billion, five hundred sixty-three million, six hundred thirteen thousand, six hundred four".