1143648768 has 80 divisors (see below), whose sum is σ = 3055741920. Its totient is φ = 380092416.

The previous prime is 1143648761. The next prime is 1143648773. The reversal of 1143648768 is 8678463411.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1143648761) 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, 642696 + ... + 644472.

It is an arithmetic number, because the mean of its divisors is an integer number (38196774).

Almost surely, 2^1143648768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143648768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1527870960).

1143648768 is an abundant number, since it is smaller than the sum of its proper divisors (1912093152).

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

1143648768 is an equidigital number, since it uses as much as digits as its factorization.

1143648768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217 (or 2201 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 1143648768 is about 33817.8764560994. The cubic root of 1143648768 is about 1045.7572613010.

The spelling of 1143648768 in words is "one billion, one hundred forty-three million, six hundred forty-eight thousand, seven hundred sixty-eight".