1143043091 has 4 divisors (see below), whose sum is σ = 1182458400. Its totient is φ = 1103627784.

The previous prime is 1143043081. The next prime is 1143043117. The reversal of 1143043091 is 1903403411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143043091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143043091.

It is not an unprimeable number, because it can be changed into a prime (1143043001) 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 in 3 ways as a sum of consecutive naturals, for example, 19707611 + ... + 19707668.

It is an arithmetic number, because the mean of its divisors is an integer number (295614600).

Almost surely, 2^1143043091 is an apocalyptic number.

1143043091 is a deficient number, since it is larger than the sum of its proper divisors (39415309).

1143043091 is an equidigital number, since it uses as much as digits as its factorization.

1143043091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39415308.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1143043091 is about 33808.9202874034. The cubic root of 1143043091 is about 1045.5726174995.

The spelling of 1143043091 in words is "one billion, one hundred forty-three million, forty-three thousand, ninety-one".