118393978 has 16 divisors (see below), whose sum is σ = 191499840. Its totient is φ = 54712800.

The previous prime is 118393973. The next prime is 118394021. The reversal of 118393978 is 879393811.

It is not an unprimeable number, because it can be changed into a prime (118393973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36438 + ... + 39553.

It is an arithmetic number, because the mean of its divisors is an integer number (11968740).

Almost surely, 2^118393978 is an apocalyptic number.

118393978 is a deficient number, since it is larger than the sum of its proper divisors (73105862).

118393978 is a wasteful number, since it uses less digits than its factorization.

118393978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76053.

The product of its digits is 326592, while the sum is 49.

The square root of 118393978 is about 10880.8996870663. The cubic root of 118393978 is about 491.0320853206.

The spelling of 118393978 in words is "one hundred eighteen million, three hundred ninety-three thousand, nine hundred seventy-eight".