1143113449 has 2 divisors, whose sum is σ = 1143113450. Its totient is φ = 1143113448.

The previous prime is 1143113401. The next prime is 1143113453. The reversal of 1143113449 is 9443113411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896403600 + 246709849 = 29940^2 + 15707^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143113449 - 2¹⁵ = 1143080681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143113449.

It is not a weakly prime, because it can be changed into another prime (1143113459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571556724 + 571556725.

It is an arithmetic number, because the mean of its divisors is an integer number (571556725).

Almost surely, 2^1143113449 is an apocalyptic number.

It is an amenable number.

1143113449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143113449 is an equidigital number, since it uses as much as digits as its factorization.

1143113449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 1143113449 is about 33809.9607955999. The cubic root of 1143113449 is about 1045.5940698517.

The spelling of 1143113449 in words is "one billion, one hundred forty-three million, one hundred thirteen thousand, four hundred forty-nine".