923981768818 has 16 divisors (see below), whose sum is σ = 1468412600760. Its totient is φ = 434544685056.

The previous prime is 923981768797. The next prime is 923981768819. The reversal of 923981768818 is 818867189329.

923981768818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 916543913769 + 7437855049 = 957363^2 + 86243^2 .

It is not an unprimeable number, because it can be changed into a prime (923981768819) 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, 8390271 + ... + 8499682.

Almost surely, 2^923981768818 is an apocalyptic number.

923981768818 is a deficient number, since it is larger than the sum of its proper divisors (544430831942).

923981768818 is a wasteful number, since it uses less digits than its factorization.

923981768818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16891581.

The product of its digits is 83607552, while the sum is 70.

The spelling of 923981768818 in words is "nine hundred twenty-three billion, nine hundred eighty-one million, seven hundred sixty-eight thousand, eight hundred eighteen".