1121911158 has 64 divisors (see below), whose sum is σ = 2513452032. Its totient is φ = 332006400.

The previous prime is 1121911129. The next prime is 1121911159. The reversal of 1121911158 is 8511191211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121911159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167983 + ... + 174533.

It is an arithmetic number, because the mean of its divisors is an integer number (39272688).

Almost surely, 2^1121911158 is an apocalyptic number.

1121911158 is an abundant number, since it is smaller than the sum of its proper divisors (1391540874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121911158 is a wasteful number, since it uses less digits than its factorization.

1121911158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669.

The product of its digits is 720, while the sum is 30.

The square root of 1121911158 is about 33494.9422749167. The cubic root of 1121911158 is about 1039.0891797410.

The spelling of 1121911158 in words is "one billion, one hundred twenty-one million, nine hundred eleven thousand, one hundred fifty-eight".