1143255499 has 2 divisors, whose sum is σ = 1143255500. Its totient is φ = 1143255498.

The previous prime is 1143255467. The next prime is 1143255539. The reversal of 1143255499 is 9945523411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143255499 - 2⁵ = 1143255467 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143255599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571627749 + 571627750.

It is an arithmetic number, because the mean of its divisors is an integer number (571627750).

Almost surely, 2^1143255499 is an apocalyptic number.

1143255499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143255499 is an equidigital number, since it uses as much as digits as its factorization.

1143255499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 43.

The square root of 1143255499 is about 33812.0614426272. The cubic root of 1143255499 is about 1045.6373786139.

The spelling of 1143255499 in words is "one billion, one hundred forty-three million, two hundred fifty-five thousand, four hundred ninety-nine".