118885091 has 16 divisors (see below), whose sum is σ = 134270976. Its totient is φ = 104439456.

The previous prime is 118885073. The next prime is 118885103. The reversal of 118885091 is 190588811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 118885091 - 2¹⁰ = 118884067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118885021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65786 + ... + 67568.

It is an arithmetic number, because the mean of its divisors is an integer number (8391936).

Almost surely, 2^118885091 is an apocalyptic number.

118885091 is a deficient number, since it is larger than the sum of its proper divisors (15385885).

118885091 is a wasteful number, since it uses less digits than its factorization.

118885091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042.

The product of its (nonzero) digits is 23040, while the sum is 41.

The square root of 118885091 is about 10903.4439971965. The cubic root of 118885091 is about 491.7101028113.

The spelling of 118885091 in words is "one hundred eighteen million, eight hundred eighty-five thousand, ninety-one".