9983931240818 has 16 divisors (see below), whose sum is σ = 15139203952824. Its totient is φ = 4937590579200.

The previous prime is 9983931240817. The next prime is 9983931240863. The reversal of 9983931240818 is 8180421393899.

It can be written as a sum of positive squares in 4 ways, for example, as 9846962412169 + 136968828649 = 3137987^2 + 370093^2 .

It is not an unprimeable number, because it can be changed into a prime (9983931240817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14833883 + ... + 15492318.

Almost surely, 2^{9983931240818} is an apocalyptic number.

9983931240818 is a deficient number, since it is larger than the sum of its proper divisors (5155272712006).

9983931240818 is a wasteful number, since it uses less digits than its factorization.

9983931240818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30327997.

The product of its (nonzero) digits is 26873856, while the sum is 65.

The spelling of 9983931240818 in words is "nine trillion, nine hundred eighty-three billion, nine hundred thirty-one million, two hundred forty thousand, eight hundred eighteen".