118518390 has 192 divisors, whose sum is σ = 358525440. Its totient is φ = 27993600.

The previous prime is 118518353. The next prime is 118518391. The reversal of 118518390 is 93815811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118518391) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 784815 + ... + 784965.

It is an arithmetic number, because the mean of its divisors is an integer number (1867320).

Almost surely, 2^118518390 is an apocalyptic number.

118518390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 118518390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179262720).

118518390 is an abundant number, since it is smaller than the sum of its proper divisors (240007050).

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

118518390 is a wasteful number, since it uses less digits than its factorization.

118518390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 118518390 is about 10886.6151764449. The cubic root of 118518390 is about 491.2040222688.

The spelling of 118518390 in words is "one hundred eighteen million, five hundred eighteen thousand, three hundred ninety".