1143805448 has 8 divisors (see below), whose sum is σ = 2144635230. Its totient is φ = 571902720.

The previous prime is 1143805417. The next prime is 1143805451. The reversal of 1143805448 is 8445083411.

It can be written as a sum of positive squares in only one way, i.e., 1026689764 + 117115684 = 32042^2 + 10822^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71487833 + ... + 71487848.

Almost surely, 2^1143805448 is an apocalyptic number.

It is an amenable number.

1143805448 is a deficient number, since it is larger than the sum of its proper divisors (1000829782).

1143805448 is a wasteful number, since it uses less digits than its factorization.

1143805448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142975687 (or 142975683 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 1143805448 is about 33820.1929030572. The cubic root of 1143805448 is about 1045.8050154048.

Adding to 1143805448 its reverse (8445083411), we get a palindrome (9588888859).

The spelling of 1143805448 in words is "one billion, one hundred forty-three million, eight hundred five thousand, four hundred forty-eight".