118489644 has 108 divisors (see below), whose sum is σ = 375289824. Its totient is φ = 31243968.

The previous prime is 118489619. The next prime is 118489661. The reversal of 118489644 is 446984811.

It is a self number, because there is not a number n which added to its sum of digits gives 118489644.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20349 + ... + 25515.

Almost surely, 2^118489644 is an apocalyptic number.

118489644 is a gapful number since it is divisible by the number (14) 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 118489644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187644912).

118489644 is an abundant number, since it is smaller than the sum of its proper divisors (256800180).

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

118489644 is a wasteful number, since it uses less digits than its factorization.

118489644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204 (or 5192 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 118489644 is about 10885.2948513120. The cubic root of 118489644 is about 491.1643060904.

The spelling of 118489644 in words is "one hundred eighteen million, four hundred eighty-nine thousand, six hundred forty-four".