1091050189 has 8 divisors (see below), whose sum is σ = 1119327552. Its totient is φ = 1063133280.

The previous prime is 1091050187. The next prime is 1091050193. The reversal of 1091050189 is 9810501901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1091050189 - 2¹ = 1091050187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091050187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83977 + ... + 96094.

It is an arithmetic number, because the mean of its divisors is an integer number (139915944).

Almost surely, 2^1091050189 is an apocalyptic number.

It is an amenable number.

1091050189 is a deficient number, since it is larger than the sum of its proper divisors (28277363).

1091050189 is an equidigital number, since it uses as much as digits as its factorization.

1091050189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180227.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 1091050189 is about 33031.0488631530. The cubic root of 1091050189 is about 1029.4728785523.

The spelling of 1091050189 in words is "one billion, ninety-one million, fifty thousand, one hundred eighty-nine".