1143983568 has 320 divisors, whose sum is σ = 3879751680. Its totient is φ = 282230784.

The previous prime is 1143983557. The next prime is 1143983573. The reversal of 1143983568 is 8653893411.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5927280 + ... + 5927472.

It is an arithmetic number, because the mean of its divisors is an integer number (12124224).

Almost surely, 2^1143983568 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 1143983568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939875840).

1143983568 is an abundant number, since it is smaller than the sum of its proper divisors (2735768112).

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

1143983568 is a wasteful number, since it uses less digits than its factorization.

1143983568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 1143983568 is about 33822.8261385710. The cubic root of 1143983568 is about 1045.8592988557.

The spelling of 1143983568 in words is "one billion, one hundred forty-three million, nine hundred eighty-three thousand, five hundred sixty-eight".