8918398944 has 384 divisors, whose sum is σ = 32511790080. Its totient is φ = 2315630592.

The previous prime is 8918398919. The next prime is 8918398967. The reversal of 8918398944 is 4498938198.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

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, 5266962 + ... + 5268654.

It is an arithmetic number, because the mean of its divisors is an integer number (84666120).

Almost surely, 2^8918398944 is an apocalyptic number.

8918398944 is a gapful number since it is divisible by the number (84) 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 8918398944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16255895040).

8918398944 is an abundant number, since it is smaller than the sum of its proper divisors (23593391136).

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

8918398944 is a wasteful number, since it uses less digits than its factorization.

8918398944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799 (or 1785 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The square root of 8918398944 is about 94437.2751830547. The cubic root of 8918398944 is about 2073.7781702402.

The spelling of 8918398944 in words is "eight billion, nine hundred eighteen million, three hundred ninety-eight thousand, nine hundred forty-four".