118510866 has 48 divisors (see below), whose sum is σ = 271814400. Its totient is φ = 37213344.

The previous prime is 118510841. The next prime is 118510867. The reversal of 118510866 is 668015811.

It is a self number, because there is not a number n which added to its sum of digits gives 118510866.

It is not an unprimeable number, because it can be changed into a prime (118510867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66495 + ... + 68253.

It is an arithmetic number, because the mean of its divisors is an integer number (5662800).

Almost surely, 2^118510866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118510866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135907200).

118510866 is an abundant number, since it is smaller than the sum of its proper divisors (153303534).

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

118510866 is a wasteful number, since it uses less digits than its factorization.

118510866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983 (or 1980 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 118510866 is about 10886.2696090075. The cubic root of 118510866 is about 491.1936275464.

The spelling of 118510866 in words is "one hundred eighteen million, five hundred ten thousand, eight hundred sixty-six".