9783981318 has 16 divisors (see below), whose sum is σ = 19568932416. Its totient is φ = 3261165480.

The previous prime is 9783981301. The next prime is 9783981367. The reversal of 9783981318 is 8131893879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212905 + ... + 254747.

It is an arithmetic number, because the mean of its divisors is an integer number (1223058276).

Almost surely, 2^9783981318 is an apocalyptic number.

9783981318 is an abundant number, since it is smaller than the sum of its proper divisors (9784951098).

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

9783981318 is a wasteful number, since it uses less digits than its factorization.

9783981318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80819.

The product of its digits is 2612736, while the sum is 57.

The square root of 9783981318 is about 98914.0097155100. The cubic root of 9783981318 is about 2138.8083532150.

The spelling of 9783981318 in words is "nine billion, seven hundred eighty-three million, nine hundred eighty-one thousand, three hundred eighteen".