118405478 has 8 divisors (see below), whose sum is σ = 177778800. Its totient is φ = 59145880.

The previous prime is 118405477. The next prime is 118405481. The reversal of 118405478 is 874504811.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118405477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25778 + ... + 30021.

It is an arithmetic number, because the mean of its divisors is an integer number (22222350).

Almost surely, 2^118405478 is an apocalyptic number.

118405478 is a deficient number, since it is larger than the sum of its proper divisors (59373322).

118405478 is a wasteful number, since it uses less digits than its factorization.

118405478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56862.

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 118405478 is about 10881.4281231831. The cubic root of 118405478 is about 491.0479833313.

The spelling of 118405478 in words is "one hundred eighteen million, four hundred five thousand, four hundred seventy-eight".