18385725294 has 24 divisors (see below), whose sum is σ = 39838465992. Its totient is φ = 6128155440.

The previous prime is 18385725251. The next prime is 18385725299. The reversal of 18385725294 is 49252758381.

18385725294 is a `hidden beast` number, since 1 + 8 + 385 + 7 + 252 + 9 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18385725294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18385725299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349329 + ... + 398499.

It is an arithmetic number, because the mean of its divisors is an integer number (1659936083).

Almost surely, 2^18385725294 is an apocalyptic number.

18385725294 is an abundant number, since it is smaller than the sum of its proper divisors (21452740698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18385725294 is a wasteful number, since it uses less digits than its factorization.

18385725294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69952 (or 69949 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The spelling of 18385725294 in words is "eighteen billion, three hundred eighty-five million, seven hundred twenty-five thousand, two hundred ninety-four".