18426113685 has 80 divisors (see below), whose sum is σ = 37804922496. Its totient is φ = 8410925952.

The previous prime is 18426113681. The next prime is 18426113723. The reversal of 18426113685 is 58631162481.

18426113685 is a `hidden beast` number, since 18 + 426 + 1 + 136 + 85 = 666.

It is not a de Polignac number, because 18426113685 - 2² = 18426113681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18426113685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18426113681) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2073622 + ... + 2082488.

Almost surely, 2^18426113685 is an apocalyptic number.

18426113685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18426113685 is an abundant number, since it is smaller than the sum of its proper divisors (19378808811).

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

18426113685 is an equidigital number, since it uses as much as digits as its factorization.

18426113685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9624 (or 9615 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The spelling of 18426113685 in words is "eighteen billion, four hundred twenty-six million, one hundred thirteen thousand, six hundred eighty-five".