18385725303 has 144 divisors (see below), whose sum is σ = 32644405248. Its totient is φ = 10302811200.

The previous prime is 18385725299. The next prime is 18385725353. The reversal of 18385725303 is 30352758381.

18385725303 is a `hidden beast` number, since 18 + 38 + 5 + 72 + 530 + 3 = 666.

It is not a de Polignac number, because 18385725303 - 2² = 18385725299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18385725353) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 20963901 + ... + 20964777.

Almost surely, 2^18385725303 is an apocalyptic number.

18385725303 is a deficient number, since it is larger than the sum of its proper divisors (14258679945).

18385725303 is a wasteful number, since it uses less digits than its factorization.

18385725303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 18385725303 in words is "eighteen billion, three hundred eighty-five million, seven hundred twenty-five thousand, three hundred three".