118208978 has 16 divisors (see below), whose sum is σ = 184520160. Its totient is φ = 56749056.

The previous prime is 118208947. The next prime is 118208989. The reversal of 118208978 is 879802811.

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, 6575 + ... + 16722.

It is an arithmetic number, because the mean of its divisors is an integer number (11532510).

Almost surely, 2^118208978 is an apocalyptic number.

118208978 is a deficient number, since it is larger than the sum of its proper divisors (66311182).

118208978 is a wasteful number, since it uses less digits than its factorization.

118208978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23401.

The product of its (nonzero) digits is 64512, while the sum is 44.

The square root of 118208978 is about 10872.3952282834. The cubic root of 118208978 is about 490.7761931043.

The spelling of 118208978 in words is "one hundred eighteen million, two hundred eight thousand, nine hundred seventy-eight".