1121579158 has 32 divisors (see below), whose sum is σ = 2029593600. Its totient is φ = 454097664.

The previous prime is 1121579143. The next prime is 1121579159. The reversal of 1121579158 is 8519751211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121579158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121579159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91878 + ... + 103366.

It is an arithmetic number, because the mean of its divisors is an integer number (63424800).

Almost surely, 2^1121579158 is an apocalyptic number.

1121579158 is a deficient number, since it is larger than the sum of its proper divisors (908014442).

1121579158 is a wasteful number, since it uses less digits than its factorization.

1121579158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11884.

The product of its digits is 25200, while the sum is 40.

The square root of 1121579158 is about 33489.9859360974. The cubic root of 1121579158 is about 1038.9866726219.

The spelling of 1121579158 in words is "one billion, one hundred twenty-one million, five hundred seventy-nine thousand, one hundred fifty-eight".