1143849313 has 2 divisors, whose sum is σ = 1143849314. Its totient is φ = 1143849312.

The previous prime is 1143849281. The next prime is 1143849323. The reversal of 1143849313 is 3139483411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1125803809 + 18045504 = 33553^2 + 4248^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143849313 - 2⁵ = 1143849281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143849323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571924656 + 571924657.

It is an arithmetic number, because the mean of its divisors is an integer number (571924657).

Almost surely, 2^1143849313 is an apocalyptic number.

It is an amenable number.

1143849313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143849313 is an equidigital number, since it uses as much as digits as its factorization.

1143849313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 1143849313 is about 33820.8413999415. The cubic root of 1143849313 is about 1045.8183841266.

The spelling of 1143849313 in words is "one billion, one hundred forty-three million, eight hundred forty-nine thousand, three hundred thirteen".