12379449618 has 32 divisors (see below), whose sum is σ = 27652449600. Its totient is φ = 4105099008.

The previous prime is 12379449583. The next prime is 12379449619. The reversal of 12379449618 is 81694497321.

12379449618 is a `hidden beast` number, since 12 + 3 + 7 + 9 + 4 + 4 + 9 + 618 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12379449619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583488 + ... + 604331.

It is an arithmetic number, because the mean of its divisors is an integer number (864139050).

Almost surely, 2^12379449618 is an apocalyptic number.

12379449618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12379449618 is an abundant number, since it is smaller than the sum of its proper divisors (15272999982).

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

12379449618 is a wasteful number, since it uses less digits than its factorization.

12379449618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188023 (or 1188017 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 12379449618 in words is "twelve billion, three hundred seventy-nine million, four hundred forty-nine thousand, six hundred eighteen".