18753143908 has 6 divisors (see below), whose sum is σ = 32818001846. Its totient is φ = 9376571952.

The previous prime is 18753143881. The next prime is 18753143911. The reversal of 18753143908 is 80934135781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17825454144 + 927689764 = 133512^2 + 30458^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2344142985 + ... + 2344142992.

Almost surely, 2^18753143908 is an apocalyptic number.

It is an amenable number.

18753143908 is a deficient number, since it is larger than the sum of its proper divisors (14064857938).

18753143908 is a wasteful number, since it uses less digits than its factorization.

18753143908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688285981 (or 4688285979 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 18753143908 in words is "eighteen billion, seven hundred fifty-three million, one hundred forty-three thousand, nine hundred eight".