1143445487 has 2 divisors, whose sum is σ = 1143445488. Its totient is φ = 1143445486.

The previous prime is 1143445453. The next prime is 1143445559. The reversal of 1143445487 is 7845443411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143445487 - 2⁸ = 1143445231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143445417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571722743 + 571722744.

It is an arithmetic number, because the mean of its divisors is an integer number (571722744).

Almost surely, 2^1143445487 is an apocalyptic number.

1143445487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143445487 is an equidigital number, since it uses as much as digits as its factorization.

1143445487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 41.

The square root of 1143445487 is about 33814.8707967368. The cubic root of 1143445487 is about 1045.6952972947.

Adding to 1143445487 its reverse (7845443411), we get a palindrome (8988888898).

The spelling of 1143445487 in words is "one billion, one hundred forty-three million, four hundred forty-five thousand, four hundred eighty-seven".