18244174068 has 18 divisors (see below), whose sum is σ = 46117217874. Its totient is φ = 6081391344.

The previous prime is 18244174063. The next prime is 18244174111. The reversal of 18244174068 is 86047144281.

18244174068 is a `hidden beast` number, since 1 + 82 + 441 + 74 + 0 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15602008464 + 2642165604 = 124908^2 + 51402^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18244174061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 253391271 + ... + 253391342.

Almost surely, 2^18244174068 is an apocalyptic number.

18244174068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18244174068 is an abundant number, since it is smaller than the sum of its proper divisors (27873043806).

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

18244174068 is a wasteful number, since it uses less digits than its factorization.

18244174068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506782623 (or 506782618 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 18244174068 in words is "eighteen billion, two hundred forty-four million, one hundred seventy-four thousand, sixty-eight".