118181113 has 4 divisors (see below), whose sum is σ = 118227600. Its totient is φ = 118134628.

The previous prime is 118181111. The next prime is 118181123. The reversal of 118181113 is 311181811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118181113 - 2¹ = 118181111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118181111) 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, 19195 + ... + 24592.

It is an arithmetic number, because the mean of its divisors is an integer number (29556900).

Almost surely, 2^118181113 is an apocalyptic number.

It is an amenable number.

118181113 is a deficient number, since it is larger than the sum of its proper divisors (46487).

118181113 is an equidigital number, since it uses as much as digits as its factorization.

118181113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46486.

The product of its digits is 192, while the sum is 25.

The square root of 118181113 is about 10871.1136963974. The cubic root of 118181113 is about 490.7376270733.

The spelling of 118181113 in words is "one hundred eighteen million, one hundred eighty-one thousand, one hundred thirteen".