1121159159 has 4 divisors (see below), whose sum is σ = 1125521904. Its totient is φ = 1116796416.

The previous prime is 1121159141. The next prime is 1121159183. The reversal of 1121159159 is 9519511211.

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-1121159159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121159759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180987 + ... + 2181500.

It is an arithmetic number, because the mean of its divisors is an integer number (281380476).

Almost surely, 2^1121159159 is an apocalyptic number.

1121159159 is a deficient number, since it is larger than the sum of its proper divisors (4362745).

1121159159 is an equidigital number, since it uses as much as digits as its factorization.

1121159159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362744.

The product of its digits is 4050, while the sum is 35.

The square root of 1121159159 is about 33483.7148327362. The cubic root of 1121159159 is about 1038.8569662635.

The spelling of 1121159159 in words is "one billion, one hundred twenty-one million, one hundred fifty-nine thousand, one hundred fifty-nine".