1116531648 has 112 divisors (see below), whose sum is σ = 3324352000. Its totient is φ = 367421184.

The previous prime is 1116531641. The next prime is 1116531667. The reversal of 1116531648 is 8461356111.

It is a happy number.

1116531648 is a `hidden beast` number, since 1 + 1 + 1 + 6 + 5 + 3 + 1 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116531641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132423 + ... + 140601.

Almost surely, 2^1116531648 is an apocalyptic number.

1116531648 is a gapful number since it is divisible by the number (18) 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 1116531648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1662176000).

1116531648 is an abundant number, since it is smaller than the sum of its proper divisors (2207820352).

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

1116531648 is an equidigital number, since it uses as much as digits as its factorization.

1116531648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279 (or 8263 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1116531648 is about 33414.5424628260. The cubic root of 1116531648 is about 1037.4257239708.

Adding to 1116531648 its reverse (8461356111), we get a palindrome (9577887759).

The spelling of 1116531648 in words is "one billion, one hundred sixteen million, five hundred thirty-one thousand, six hundred forty-eight".