989118000 has 320 divisors, whose sum is σ = 3818505600. Its totient is φ = 243302400.

The previous prime is 989117923. The next prime is 989118049. The reversal of 989118000 is 811989.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 701296 + ... + 702704.

It is an arithmetic number, because the mean of its divisors is an integer number (11932830).

Almost surely, 2^989118000 is an apocalyptic number.

989118000 is a gapful number since it is divisible by the number (90) 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 989118000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1909252800).

989118000 is an abundant number, since it is smaller than the sum of its proper divisors (2829387600).

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

989118000 is a wasteful number, since it uses less digits than its factorization.

989118000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 1432 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 989118000 is about 31450.2464219281. The cubic root of 989118000 is about 996.3594289932.

Adding to 989118000 its reverse (811989), we get a palindrome (989929989).

The spelling of 989118000 in words is "nine hundred eighty-nine million, one hundred eighteen thousand".