1120920191 has 4 divisors (see below), whose sum is σ = 1121355072. Its totient is φ = 1120485312.

The previous prime is 1120920169. The next prime is 1120920247. The reversal of 1120920191 is 1910290211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1120920191 - 2⁶ = 1120920127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1120920191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120920131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213551 + ... + 218736.

It is an arithmetic number, because the mean of its divisors is an integer number (280338768).

Almost surely, 2^1120920191 is an apocalyptic number.

1120920191 is a deficient number, since it is larger than the sum of its proper divisors (434881).

1120920191 is an equidigital number, since it uses as much as digits as its factorization.

1120920191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434880.

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 1120920191 is about 33480.1462213055. The cubic root of 1120920191 is about 1038.7831524166.

The spelling of 1120920191 in words is "one billion, one hundred twenty million, nine hundred twenty thousand, one hundred ninety-one".