118051218 has 48 divisors (see below), whose sum is σ = 275839200. Its totient is φ = 36365760.

The previous prime is 118051217. The next prime is 118051223. The reversal of 118051218 is 812150811.

It is a junction number, because it is equal to n+sod(n) for n = 118051191 and 118051200.

It is not an unprimeable number, because it can be changed into a prime (118051217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9813 + ... + 18231.

It is an arithmetic number, because the mean of its divisors is an integer number (5746650).

Almost surely, 2^118051218 is an apocalyptic number.

118051218 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 118051218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137919600).

118051218 is an abundant number, since it is smaller than the sum of its proper divisors (157787982).

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

118051218 is a wasteful number, since it uses less digits than its factorization.

118051218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8487 (or 8484 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 27.

The square root of 118051218 is about 10865.1377349760. The cubic root of 118051218 is about 490.5577682930.

The spelling of 118051218 in words is "one hundred eighteen million, fifty-one thousand, two hundred eighteen".