918328320 has 704 divisors, whose sum is σ = 4071728640. Its totient is φ = 191102976.

The previous prime is 918328303. The next prime is 918328357. The reversal of 918328320 is 23823819.

It is a happy number.

918328320 is a `hidden beast` number, since 9 + 1 + 8 + 328 + 320 = 666.

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 polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12579804 + ... + 12579876.

Almost surely, 2^918328320 is an apocalyptic number.

918328320 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 918328320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2035864320).

918328320 is an abundant number, since it is smaller than the sum of its proper divisors (3153400320).

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

918328320 is a wasteful number, since it uses less digits than its factorization.

918328320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 918328320 is about 30303.9324180873. The cubic root of 918328320 is about 971.9993903365. Note that the first 3 decimals are identical.

The spelling of 918328320 in words is "nine hundred eighteen million, three hundred twenty-eight thousand, three hundred twenty".