18923505858924 has 12 divisors (see below), whose sum is σ = 44154847004184. Its totient is φ = 6307835286304.

The previous prime is 18923505858889. The next prime is 18923505858937. The reversal of 18923505858924 is 42985850532981.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788479410777 + ... + 788479410800.

It is an arithmetic number, because the mean of its divisors is an integer number (3679570583682).

Almost surely, 2^{18923505858924} is an apocalyptic number.

It is an amenable number.

18923505858924 is an abundant number, since it is smaller than the sum of its proper divisors (25231341145260).

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

18923505858924 is a wasteful number, since it uses less digits than its factorization.

18923505858924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576958821584 (or 1576958821582 counting only the distinct ones).

The product of its (nonzero) digits is 248832000, while the sum is 69.

The spelling of 18923505858924 in words is "eighteen trillion, nine hundred twenty-three billion, five hundred five million, eight hundred fifty-eight thousand, nine hundred twenty-four".