18128485807 has 4 divisors (see below), whose sum is σ = 18297911016. Its totient is φ = 17959060600.

The previous prime is 18128485801. The next prime is 18128485819. The reversal of 18128485807 is 70858482181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18128485807 - 2⁷ = 18128485679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18128485801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84712444 + ... + 84712657.

It is an arithmetic number, because the mean of its divisors is an integer number (4574477754).

Almost surely, 2^18128485807 is an apocalyptic number.

18128485807 is a deficient number, since it is larger than the sum of its proper divisors (169425209).

18128485807 is a wasteful number, since it uses less digits than its factorization.

18128485807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169425208.

The product of its (nonzero) digits is 1146880, while the sum is 52.

The spelling of 18128485807 in words is "eighteen billion, one hundred twenty-eight million, four hundred eighty-five thousand, eight hundred seven".