1806528555028 has 48 divisors (see below), whose sum is σ = 3213378075600. Its totient is φ = 888532254720.

The previous prime is 1806528555023. The next prime is 1806528555043. The reversal of 1806528555028 is 8205558256081.

It can be written as a sum of positive squares in 8 ways, for example, as 115119061264 + 1691409493764 = 339292^2 + 1300542^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1806528555028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806528555023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91706076 + ... + 91725772.

It is an arithmetic number, because the mean of its divisors is an integer number (66945376575).

Almost surely, 2^{1806528555028} is an apocalyptic number.

It is an amenable number.

1806528555028 is a deficient number, since it is larger than the sum of its proper divisors (1406849520572).

1806528555028 is a wasteful number, since it uses less digits than its factorization.

1806528555028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21100 (or 21098 counting only the distinct ones).

The product of its (nonzero) digits is 7680000, while the sum is 55.

The spelling of 1806528555028 in words is "one trillion, eight hundred six billion, five hundred twenty-eight million, five hundred fifty-five thousand, twenty-eight".