1143441461 has 2 divisors, whose sum is σ = 1143441462. Its totient is φ = 1143441460.

The previous prime is 1143441391. The next prime is 1143441469. The reversal of 1143441461 is 1641443411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 916938961 + 226502500 = 30281^2 + 15050^2 .

It is an emirp because it is prime and its reverse (1641443411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1143441461 - 2¹⁰ = 1143440437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143441469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571720730 + 571720731.

It is an arithmetic number, because the mean of its divisors is an integer number (571720731).

Almost surely, 2^1143441461 is an apocalyptic number.

It is an amenable number.

1143441461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143441461 is an equidigital number, since it uses as much as digits as its factorization.

1143441461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 1143441461 is about 33814.8112666624. The cubic root of 1143441461 is about 1045.6940700174.

Adding to 1143441461 its reverse (1641443411), we get a palindrome (2784884872).

The spelling of 1143441461 in words is "one billion, one hundred forty-three million, four hundred forty-one thousand, four hundred sixty-one".