112665181 has 4 divisors (see below), whose sum is σ = 113662332. Its totient is φ = 111668032.

The previous prime is 112665169. The next prime is 112665187. The reversal of 112665181 is 181566211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26936100 + 85729081 = 5190^2 + 9259^2 .

It is a cyclic number.

It is not a de Polignac number, because 112665181 - 2⁵ = 112665149 is a prime.

It is a super-2 number, since 2×112665181² = 25386886019525522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112665187) 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, 498406 + ... + 498631.

It is an arithmetic number, because the mean of its divisors is an integer number (28415583).

Almost surely, 2^112665181 is an apocalyptic number.

It is an amenable number.

112665181 is a deficient number, since it is larger than the sum of its proper divisors (997151).

112665181 is an equidigital number, since it uses as much as digits as its factorization.

112665181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997150.

The product of its digits is 2880, while the sum is 31.

The square root of 112665181 is about 10614.3855686516. The cubic root of 112665181 is about 482.9808441723.

The spelling of 112665181 in words is "one hundred twelve million, six hundred sixty-five thousand, one hundred eighty-one".