1143535441 has 2 divisors, whose sum is σ = 1143535442. Its totient is φ = 1143535440.

The previous prime is 1143535439. The next prime is 1143535451. The reversal of 1143535441 is 1445353411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 878529600 + 265005841 = 29640^2 + 16279^2 .

It is an emirp because it is prime and its reverse (1445353411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1143535441 - 2¹ = 1143535439 is a prime.

Together with 1143535439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1143535451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571767720 + 571767721.

It is an arithmetic number, because the mean of its divisors is an integer number (571767721).

Almost surely, 2^1143535441 is an apocalyptic number.

It is an amenable number.

1143535441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143535441 is an equidigital number, since it uses as much as digits as its factorization.

1143535441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 1143535441 is about 33816.2008658572. The cubic root of 1143535441 is about 1045.7227179309.

Adding to 1143535441 its reverse (1445353411), we get a palindrome (2588888852).

The spelling of 1143535441 in words is "one billion, one hundred forty-three million, five hundred thirty-five thousand, four hundred forty-one".