118049778 has 192 divisors, whose sum is σ = 344736000. Its totient is φ = 29272320.

The previous prime is 118049773. The next prime is 118049791. The reversal of 118049778 is 877940811.

118049778 is a `hidden beast` number, since 11 + 80 + 497 + 78 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118049773) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1326358 + ... + 1326446.

It is an arithmetic number, because the mean of its divisors is an integer number (1795500).

Almost surely, 2^118049778 is an apocalyptic number.

118049778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 118049778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172368000).

118049778 is an abundant number, since it is smaller than the sum of its proper divisors (226686222).

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

118049778 is a wasteful number, since it uses less digits than its factorization.

118049778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 118049778 is about 10865.0714677815. The cubic root of 118049778 is about 490.5557736614. Note that the first 3 decimals are identical.

The spelling of 118049778 in words is "one hundred eighteen million, forty-nine thousand, seven hundred seventy-eight".