118591000 has 64 divisors (see below), whose sum is σ = 302758560. Its totient is φ = 43120000.

The previous prime is 118590961. The next prime is 118591001. The reversal of 118591000 is 195811.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118591001) 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 15 ways as a sum of consecutive naturals, for example, 5610 + ... + 16390.

Almost surely, 2^118591000 is an apocalyptic number.

118591000 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 118591000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151379280).

118591000 is an abundant number, since it is smaller than the sum of its proper divisors (184167560).

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

118591000 is a wasteful number, since it uses less digits than its factorization.

118591000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10813 (or 10799 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 118591000 is about 10889.9494948324. The cubic root of 118591000 is about 491.3043134357.

The spelling of 118591000 in words is "one hundred eighteen million, five hundred ninety-one thousand".