18844913268 has 36 divisors (see below), whose sum is σ = 49172393088. Its totient is φ = 6079003920.

The previous prime is 18844913257. The next prime is 18844913273. The reversal of 18844913268 is 86231944881.

It is a happy number.

18844913268 is a `hidden beast` number, since 1 + 8 + 8 + 449 + 132 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8441946 + ... + 8444177.

It is an arithmetic number, because the mean of its divisors is an integer number (1365899808).

Almost surely, 2^18844913268 is an apocalyptic number.

18844913268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18844913268 is an abundant number, since it is smaller than the sum of its proper divisors (30327479820).

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

18844913268 is a wasteful number, since it uses less digits than its factorization.

18844913268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16886164 (or 16886159 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 18844913268 in words is "eighteen billion, eight hundred forty-four million, nine hundred thirteen thousand, two hundred sixty-eight".