918821112 has 96 divisors (see below), whose sum is σ = 2621566080. Its totient is φ = 265640320.

The previous prime is 918821093. The next prime is 918821129. The reversal of 918821112 is 211128819.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2361814 + ... + 2362202.

It is an arithmetic number, because the mean of its divisors is an integer number (27307980).

Almost surely, 2^918821112 is an apocalyptic number.

918821112 is a gapful number since it is divisible by the number (92) 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 918821112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310783040).

918821112 is an abundant number, since it is smaller than the sum of its proper divisors (1702744968).

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

918821112 is a wasteful number, since it uses less digits than its factorization.

918821112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 428 counting only the distinct ones).

The product of its digits is 2304, while the sum is 33.

The square root of 918821112 is about 30312.0621535388. The cubic root of 918821112 is about 972.1732235432.

The spelling of 918821112 in words is "nine hundred eighteen million, eight hundred twenty-one thousand, one hundred twelve".