228881648439 has 24 divisors (see below), whose sum is σ = 333564192000. Its totient is φ = 151228884240.

The previous prime is 228881648417. The next prime is 228881648491. The reversal of 228881648439 is 934846188822.

228881648439 is a `hidden beast` number, since 2 + 2 + 88 + 81 + 6 + 48 + 439 = 666.

It is not a de Polignac number, because 228881648439 - 2⁷ = 228881648311 is a prime.

It is a super-2 number, since 2×228881648439² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228881648339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201712 + ... + 706010.

It is an arithmetic number, because the mean of its divisors is an integer number (13898508000).

Almost surely, 2^228881648439 is an apocalyptic number.

228881648439 is a deficient number, since it is larger than the sum of its proper divisors (104682543561).

228881648439 is a wasteful number, since it uses less digits than its factorization.

228881648439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504755 (or 504752 counting only the distinct ones).

The product of its digits is 42467328, while the sum is 63.

The spelling of 228881648439 in words is "two hundred twenty-eight billion, eight hundred eighty-one million, six hundred forty-eight thousand, four hundred thirty-nine".