118403978 has 16 divisors (see below), whose sum is σ = 221431104. Its totient is φ = 46131360.

The previous prime is 118403933. The next prime is 118403981. The reversal of 118403978 is 879304811.

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, 384275 + ... + 384582.

It is an arithmetic number, because the mean of its divisors is an integer number (13839444).

Almost surely, 2^118403978 is an apocalyptic number.

118403978 is a deficient number, since it is larger than the sum of its proper divisors (103027126).

118403978 is a wasteful number, since it uses less digits than its factorization.

118403978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768877.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 118403978 is about 10881.3591981884. The cubic root of 118403978 is about 491.0459097361.

The spelling of 118403978 in words is "one hundred eighteen million, four hundred three thousand, nine hundred seventy-eight".