2318989398 has 64 divisors (see below), whose sum is σ = 5402529792. Its totient is φ = 656520480.

The previous prime is 2318989369. The next prime is 2318989411. The reversal of 2318989398 is 8939898132.

It is a super-4 number, since 4×2318989398⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47511 + ... + 83037.

It is an arithmetic number, because the mean of its divisors is an integer number (84414528).

Almost surely, 2^2318989398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2318989398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2701264896).

2318989398 is an abundant number, since it is smaller than the sum of its proper divisors (3083540394).

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

2318989398 is a wasteful number, since it uses less digits than its factorization.

2318989398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35609.

The product of its digits is 6718464, while the sum is 60.

The square root of 2318989398 is about 48155.8864314634. The cubic root of 2318989398 is about 1323.6289409490.

The spelling of 2318989398 in words is "two billion, three hundred eighteen million, nine hundred eighty-nine thousand, three hundred ninety-eight".