1121158873 has 4 divisors (see below), whose sum is σ = 1142312868. Its totient is φ = 1100004880.

The previous prime is 1121158861. The next prime is 1121158877. The reversal of 1121158873 is 3788511211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3788511211 = 3221 ⋅1176191.

It can be written as a sum of positive squares in 2 ways, for example, as 500551129 + 620607744 = 22373^2 + 24912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121158873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121158877) 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, 10576918 + ... + 10577023.

It is an arithmetic number, because the mean of its divisors is an integer number (285578217).

Almost surely, 2^1121158873 is an apocalyptic number.

It is an amenable number.

1121158873 is a deficient number, since it is larger than the sum of its proper divisors (21153995).

1121158873 is an equidigital number, since it uses as much as digits as its factorization.

1121158873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21153994.

The product of its digits is 13440, while the sum is 37.

The square root of 1121158873 is about 33483.7105620031. The cubic root of 1121158873 is about 1038.8568779284.

The spelling of 1121158873 in words is "one billion, one hundred twenty-one million, one hundred fifty-eight thousand, eight hundred seventy-three".