228146072018 has 30 divisors (see below), whose sum is σ = 352365992055. Its totient is φ = 110787770940.

The previous prime is 228146071997. The next prime is 228146072027. The reversal of 228146072018 is 810270641822.

It can be written as a sum of positive squares in only one way, i.e., 114073036009 + 114073036009 = 337747^2 + 337747^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=337747.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3213324923 + ... + 3213324993.

Almost surely, 2^228146072018 is an apocalyptic number.

228146072018 is a deficient number, since it is larger than the sum of its proper divisors (124219920037).

228146072018 is an frugal number, since it uses more digits than its factorization.

228146072018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The spelling of 228146072018 in words is "two hundred twenty-eight billion, one hundred forty-six million, seventy-two thousand, eighteen".