1818544183272 has 48 divisors (see below), whose sum is σ = 4925292503040. Its totient is φ = 606172942368.

The previous prime is 1818544183237. The next prime is 1818544183273. The reversal of 1818544183272 is 2723814458181.

1818544183272 is a `hidden beast` number, since 1 + 8 + 18 + 544 + 1 + 83 + 2 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1818544183273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7093273 + ... + 7345175.

It is an arithmetic number, because the mean of its divisors is an integer number (102610260480).

Almost surely, 2^{1818544183272} is an apocalyptic number.

1818544183272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1818544183272 is an abundant number, since it is smaller than the sum of its proper divisors (3106748319768).

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

1818544183272 is a wasteful number, since it uses less digits than its factorization.

1818544183272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352182 (or 352175 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The spelling of 1818544183272 in words is "one trillion, eight hundred eighteen billion, five hundred forty-four million, one hundred eighty-three thousand, two hundred seventy-two".