1134109991 has 4 divisors (see below), whose sum is σ = 1296125712. Its totient is φ = 972094272.

The previous prime is 1134109957. The next prime is 1134110009. The reversal of 1134109991 is 1999014311.

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 1134109991 - 2¹⁰ = 1134108967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1134109901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81007850 + ... + 81007863.

It is an arithmetic number, because the mean of its divisors is an integer number (324031428).

Almost surely, 2^1134109991 is an apocalyptic number.

1134109991 is a deficient number, since it is larger than the sum of its proper divisors (162015721).

1134109991 is an equidigital number, since it uses as much as digits as its factorization.

1134109991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162015720.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 1134109991 is about 33676.5495708809. The cubic root of 1134109991 is about 1042.8417076887.

The spelling of 1134109991 in words is "one billion, one hundred thirty-four million, one hundred nine thousand, nine hundred ninety-one".