118210985 has 8 divisors (see below), whose sum is σ = 144179016. Its totient is φ = 93018240.

The previous prime is 118210949. The next prime is 118210987. The reversal of 118210985 is 589012811.

It can be written as a sum of positive squares in 4 ways, for example, as 13271449 + 104939536 = 3643^2 + 10244^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118210985 - 2⁶ = 118210921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118210987) 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 7 ways as a sum of consecutive naturals, for example, 193484 + ... + 194093.

It is an arithmetic number, because the mean of its divisors is an integer number (18022377).

Almost surely, 2^118210985 is an apocalyptic number.

It is an amenable number.

118210985 is a deficient number, since it is larger than the sum of its proper divisors (25968031).

118210985 is an equidigital number, since it uses as much as digits as its factorization.

118210985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387643.

The product of its (nonzero) digits is 5760, while the sum is 35.

The square root of 118210985 is about 10872.4875258609. The cubic root of 118210985 is about 490.7789706210.

It can be divided in two parts, 1182 and 10985, that added together give a cube (12167 = 23³).

The spelling of 118210985 in words is "one hundred eighteen million, two hundred ten thousand, nine hundred eighty-five".