118981800 has 432 divisors, whose sum is σ = 496173600. Its totient is φ = 25401600.

The previous prime is 118981771. The next prime is 118981801. The reversal of 118981800 is 8189811.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118981801) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1675765 + ... + 1675835.

It is an arithmetic number, because the mean of its divisors is an integer number (1148550).

Almost surely, 2^118981800 is an apocalyptic number.

118981800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118981800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248086800).

118981800 is an abundant number, since it is smaller than the sum of its proper divisors (377191800).

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

118981800 is a wasteful number, since it uses less digits than its factorization.

118981800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 36.

The square root of 118981800 is about 10907.8778871053. The cubic root of 118981800 is about 491.8433965197.

The spelling of 118981800 in words is "one hundred eighteen million, nine hundred eighty-one thousand, eight hundred".