1117991065 has 8 divisors (see below), whose sum is σ = 1412199360. Its totient is φ = 847319472.

The previous prime is 1117991051. The next prime is 1117991081. The reversal of 1117991065 is 5601997111.

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 1117991065 - 2⁹ = 1117990553 is a prime.

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, 5884069 + ... + 5884258.

It is an arithmetic number, because the mean of its divisors is an integer number (176524920).

Almost surely, 2^1117991065 is an apocalyptic number.

It is an amenable number.

1117991065 is a deficient number, since it is larger than the sum of its proper divisors (294208295).

1117991065 is a wasteful number, since it uses less digits than its factorization.

1117991065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11768351.

The product of its (nonzero) digits is 17010, while the sum is 40.

The square root of 1117991065 is about 33436.3733828895. The cubic root of 1117991065 is about 1037.8775330930.

The spelling of 1117991065 in words is "one billion, one hundred seventeen million, nine hundred ninety-one thousand, sixty-five".