1143105091 has 2 divisors, whose sum is σ = 1143105092. Its totient is φ = 1143105090.

The previous prime is 1143105049. The next prime is 1143105101. The reversal of 1143105091 is 1905013411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1143105091 - 2¹¹ = 1143103043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143105031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571552545 + 571552546.

It is an arithmetic number, because the mean of its divisors is an integer number (571552546).

Almost surely, 2^1143105091 is an apocalyptic number.

1143105091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143105091 is an equidigital number, since it uses as much as digits as its factorization.

1143105091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1143105091 is about 33809.8371927461. The cubic root of 1143105091 is about 1045.5915215200.

The spelling of 1143105091 in words is "one billion, one hundred forty-three million, one hundred five thousand, ninety-one".