1091067109 has 8 divisors (see below), whose sum is σ = 1203629760. Its totient is φ = 980733600.

The previous prime is 1091067023. The next prime is 1091067139. The reversal of 1091067109 is 9017601901.

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

It is not a de Polignac number, because 1091067109 - 2¹⁵ = 1091034341 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 (1091067139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556257 + ... + 558214.

It is an arithmetic number, because the mean of its divisors is an integer number (150453720).

Almost surely, 2^1091067109 is an apocalyptic number.

It is an amenable number.

1091067109 is a deficient number, since it is larger than the sum of its proper divisors (112562651).

1091067109 is a wasteful number, since it uses less digits than its factorization.

1091067109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114571.

The product of its (nonzero) digits is 3402, while the sum is 34.

The square root of 1091067109 is about 33031.3049848171. The cubic root of 1091067109 is about 1029.4782002112.

The spelling of 1091067109 in words is "one billion, ninety-one million, sixty-seven thousand, one hundred nine".