1116320161 has 24 divisors (see below), whose sum is σ = 1266859872. Its totient is φ = 975340800.

The previous prime is 1116320143. The next prime is 1116320279. The reversal of 1116320161 is 1610236111.

It is not a de Polignac number, because 1116320161 - 2¹¹ = 1116318113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1116320131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1349430 + ... + 1350256.

It is an arithmetic number, because the mean of its divisors is an integer number (52785828).

Almost surely, 2^1116320161 is an apocalyptic number.

1116320161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1116320161 is a deficient number, since it is larger than the sum of its proper divisors (150539711).

1116320161 is an equidigital number, since it uses as much as digits as its factorization.

1116320161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1116320161 is about 33411.3777177775. The cubic root of 1116320161 is about 1037.3602187644.

Adding to 1116320161 its reverse (1610236111), we get a palindrome (2726556272).

The spelling of 1116320161 in words is "one billion, one hundred sixteen million, three hundred twenty thousand, one hundred sixty-one".