2191120158 has 16 divisors (see below), whose sum is σ = 4392959760. Its totient is φ = 728586816.

The previous prime is 2191120081. The next prime is 2191120171. The reversal of 2191120158 is 8510211912.

2191120158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443985 + ... + 448892.

It is an arithmetic number, because the mean of its divisors is an integer number (274559985).

Almost surely, 2^2191120158 is an apocalyptic number.

2191120158 is an abundant number, since it is smaller than the sum of its proper divisors (2201839602).

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

2191120158 is a wasteful number, since it uses less digits than its factorization.

2191120158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893291.

The product of its (nonzero) digits is 1440, while the sum is 30.

The square root of 2191120158 is about 46809.4024529261. The cubic root of 2191120158 is about 1298.8392317101.

The spelling of 2191120158 in words is "two billion, one hundred ninety-one million, one hundred twenty thousand, one hundred fifty-eight".