118847778 has 16 divisors (see below), whose sum is σ = 271652160. Its totient is φ = 33956496.

The previous prime is 118847767. The next prime is 118847801. The reversal of 118847778 is 877748811.

It is a self number, because there is not a number n which added to its sum of digits gives 118847778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1414813 + ... + 1414896.

It is an arithmetic number, because the mean of its divisors is an integer number (16978260).

Almost surely, 2^118847778 is an apocalyptic number.

118847778 is an abundant number, since it is smaller than the sum of its proper divisors (152804382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118847778 is a wasteful number, since it uses less digits than its factorization.

118847778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829721.

The product of its digits is 702464, while the sum is 51.

The square root of 118847778 is about 10901.7327980464. The cubic root of 118847778 is about 491.6586550962.

The spelling of 118847778 in words is "one hundred eighteen million, eight hundred forty-seven thousand, seven hundred seventy-eight".