8918919439936 has 63 divisors (see below), whose sum is σ = 19454275243137. Its totient is φ = 4053934832640.

The previous prime is 8918919439889. The next prime is 8918919439939. The reversal of 8918919439936 is 6399349198198.

The square root of 8918919439936 is 2986456.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8833972840000 + 84946599936 = 2972200^2 + 291456^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8918919439939) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 262791160 + ... + 262825096.

Almost surely, 2^{8918919439936} is an apocalyptic number.

8918919439936 is the 2986456-th square number.

It is an amenable number.

8918919439936 is an abundant number, since it is smaller than the sum of its proper divisors (10535355803201).

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

8918919439936 is an frugal number, since it uses more digits than its factorization.

8918919439936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67908 (or 33950 counting only the distinct ones).

The product of its digits is 816293376, while the sum is 79.

The spelling of 8918919439936 in words is "eight trillion, nine hundred eighteen billion, nine hundred nineteen million, four hundred thirty-nine thousand, nine hundred thirty-six".