118561385 has 8 divisors (see below), whose sum is σ = 144685440. Its totient is φ = 93241264.

The previous prime is 118561379. The next prime is 118561393. The reversal of 118561385 is 583165811.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 118561385 - 2⁶ = 118561321 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200657 + ... + 201246.

It is an arithmetic number, because the mean of its divisors is an integer number (18085680).

Almost surely, 2^118561385 is an apocalyptic number.

It is an amenable number.

118561385 is a deficient number, since it is larger than the sum of its proper divisors (26124055).

118561385 is an equidigital number, since it uses as much as digits as its factorization.

118561385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401967.

The product of its digits is 28800, while the sum is 38.

The square root of 118561385 is about 10888.5896699251. The cubic root of 118561385 is about 491.2634132309.

The spelling of 118561385 in words is "one hundred eighteen million, five hundred sixty-one thousand, three hundred eighty-five".