18485555385 has 96 divisors (see below), whose sum is σ = 33867783936. Its totient is φ = 8595417600.

The previous prime is 18485555371. The next prime is 18485555437. The reversal of 18485555385 is 58355558481.

It is not a de Polignac number, because 18485555385 - 2⁹ = 18485554873 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4766067 + ... + 4769943.

It is an arithmetic number, because the mean of its divisors is an integer number (352789416).

Almost surely, 2^18485555385 is an apocalyptic number.

18485555385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18485555385 is a deficient number, since it is larger than the sum of its proper divisors (15382228551).

18485555385 is a wasteful number, since it uses less digits than its factorization.

18485555385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015 (or 4004 counting only the distinct ones).

The product of its digits is 19200000, while the sum is 57.

The spelling of 18485555385 in words is "eighteen billion, four hundred eighty-five million, five hundred fifty-five thousand, three hundred eighty-five".