12413181618 has 48 divisors (see below), whose sum is σ = 28541893536. Its totient is φ = 3885498240.

The previous prime is 12413181587. The next prime is 12413181647. The reversal of 12413181618 is 81618131421.

12413181618 is a `hidden beast` number, since 1 + 2 + 4 + 1 + 31 + 8 + 1 + 618 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89773 + ... + 181343.

It is an arithmetic number, because the mean of its divisors is an integer number (594622782).

Almost surely, 2^12413181618 is an apocalyptic number.

12413181618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12413181618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14270946768).

12413181618 is an abundant number, since it is smaller than the sum of its proper divisors (16128711918).

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

12413181618 is a wasteful number, since it uses less digits than its factorization.

12413181618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92039 (or 92036 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The spelling of 12413181618 in words is "twelve billion, four hundred thirteen million, one hundred eighty-one thousand, six hundred eighteen".