1144843549 has 2 divisors, whose sum is σ = 1144843550. Its totient is φ = 1144843548.

The previous prime is 1144843543. The next prime is 1144843573. The reversal of 1144843549 is 9453484411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592922500 + 551921049 = 24350^2 + 23493^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144843549 - 2¹³ = 1144835357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144843543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572421774 + 572421775.

It is an arithmetic number, because the mean of its divisors is an integer number (572421775).

Almost surely, 2^1144843549 is an apocalyptic number.

It is an amenable number.

1144843549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144843549 is an equidigital number, since it uses as much as digits as its factorization.

1144843549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 43.

The square root of 1144843549 is about 33835.5367771815. The cubic root of 1144843549 is about 1046.1213054869.

The spelling of 1144843549 in words is "one billion, one hundred forty-four million, eight hundred forty-three thousand, five hundred forty-nine".