28118083618 has 8 divisors (see below), whose sum is σ = 42445770012. Its totient is φ = 13969493616.

The previous prime is 28118083601. The next prime is 28118083619. The reversal of 28118083618 is 81638081182.

It can be written as a sum of positive squares in 2 ways, for example, as 27951492969 + 166590649 = 167187^2 + 12907^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28118083619) 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 3 ways as a sum of consecutive naturals, for example, 44773705 + ... + 44774332.

Almost surely, 2^28118083618 is an apocalyptic number.

28118083618 is a deficient number, since it is larger than the sum of its proper divisors (14327686394).

28118083618 is a wasteful number, since it uses less digits than its factorization.

28118083618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89548196.

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 28118083618 in words is "twenty-eight billion, one hundred eighteen million, eighty-three thousand, six hundred eighteen".