1116569091 has 32 divisors (see below), whose sum is σ = 1690979328. Its totient is φ = 649347840.

The previous prime is 1116569087. The next prime is 1116569093. The reversal of 1116569091 is 1909656111.

It is a happy number.

It is not a de Polignac number, because 1116569091 - 2² = 1116569087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1116569093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82870 + ... + 95396.

It is an arithmetic number, because the mean of its divisors is an integer number (52843104).

Almost surely, 2^1116569091 is an apocalyptic number.

1116569091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1116569091 is a deficient number, since it is larger than the sum of its proper divisors (574410237).

1116569091 is a wasteful number, since it uses less digits than its factorization.

1116569091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12651.

The product of its (nonzero) digits is 14580, while the sum is 39.

The square root of 1116569091 is about 33415.1027381332. The cubic root of 1116569091 is about 1037.4373205662.

The spelling of 1116569091 in words is "one billion, one hundred sixteen million, five hundred sixty-nine thousand, ninety-one".