18425489385 has 64 divisors (see below), whose sum is σ = 30272901120. Its totient is φ = 9567317760.

The previous prime is 18425489347. The next prime is 18425489413. The reversal of 18425489385 is 58398452481.

It is not a de Polignac number, because 18425489385 - 2¹⁷ = 18425358313 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 43974706 + ... + 43975124.

It is an arithmetic number, because the mean of its divisors is an integer number (473014080).

Almost surely, 2^18425489385 is an apocalyptic number.

18425489385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18425489385 is a deficient number, since it is larger than the sum of its proper divisors (11847411735).

18425489385 is a wasteful number, since it uses less digits than its factorization.

18425489385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918.

The product of its digits is 11059200, while the sum is 57.

The spelling of 18425489385 in words is "eighteen billion, four hundred twenty-five million, four hundred eighty-nine thousand, three hundred eighty-five".