18810356008 has 16 divisors (see below), whose sum is σ = 35273235060. Its totient is φ = 9404160000.

The previous prime is 18810355999. The next prime is 18810356009. The reversal of 18810356008 is 80065301881.

It can be written as a sum of positive squares in 2 ways, for example, as 18664477924 + 145878084 = 136618^2 + 12078^2 .

It is not an unprimeable number, because it can be changed into a prime (18810356009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45643 + ... + 199258.

Almost surely, 2^18810356008 is an apocalyptic number.

It is an amenable number.

18810356008 is a deficient number, since it is larger than the sum of its proper divisors (16462879052).

18810356008 is a wasteful number, since it uses less digits than its factorization.

18810356008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254508 (or 254504 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

Adding to 18810356008 its reverse (80065301881), we get a palindrome (98875657889).

The spelling of 18810356008 in words is "eighteen billion, eight hundred ten million, three hundred fifty-six thousand, eight".