1563132120 has 128 divisors (see below), whose sum is σ = 5165821440. Its totient is φ = 375229440.

The previous prime is 1563132119. The next prime is 1563132121. The reversal of 1563132120 is 212313651.

It is an interprime number because it is at equal distance from previous prime (1563132119) and next prime (1563132121).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563132121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130212 + ... + 141708.

It is an arithmetic number, because the mean of its divisors is an integer number (40357980).

Almost surely, 2^1563132120 is an apocalyptic number.

1563132120 is a gapful number since it is divisible by the number (10) 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 1563132120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2582910720).

1563132120 is an abundant number, since it is smaller than the sum of its proper divisors (3602689320).

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

1563132120 is a wasteful number, since it uses less digits than its factorization.

1563132120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11625 (or 11621 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1563132120 is about 39536.4656994021. The cubic root of 1563132120 is about 1160.5536694997.

Adding to 1563132120 its reverse (212313651), we get a palindrome (1775445771).

The spelling of 1563132120 in words is "one billion, five hundred sixty-three million, one hundred thirty-two thousand, one hundred twenty".