1143155417 has 2 divisors, whose sum is σ = 1143155418. Its totient is φ = 1143155416.

The previous prime is 1143155413. The next prime is 1143155423. The reversal of 1143155417 is 7145513411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 843553936 + 299601481 = 29044^2 + 17309^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143155417 - 2² = 1143155413 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143155413) 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, 571577708 + 571577709.

It is an arithmetic number, because the mean of its divisors is an integer number (571577709).

Almost surely, 2^1143155417 is an apocalyptic number.

It is an amenable number.

1143155417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143155417 is an equidigital number, since it uses as much as digits as its factorization.

1143155417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 32.

The square root of 1143155417 is about 33810.5814354027. The cubic root of 1143155417 is about 1045.6068655938.

Adding to 1143155417 its reverse (7145513411), we get a palindrome (8288668828).

The spelling of 1143155417 in words is "one billion, one hundred forty-three million, one hundred fifty-five thousand, four hundred seventeen".