228485521737858 has 64 divisors (see below), whose sum is σ = 569838021212160. Its totient is φ = 59335650316800.

The previous prime is 228485521737857. The next prime is 228485521737859. The reversal of 228485521737858 is 858737125584822.

It is an interprime number because it is at equal distance from previous prime (228485521737857) and next prime (228485521737859).

It is a self number, because there is not a number n which added to its sum of digits gives 228485521737858.

It is not an unprimeable number, because it can be changed into a prime (228485521737857) 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 31 ways as a sum of consecutive naturals, for example, 44384398 + ... + 49264041.

It is an arithmetic number, because the mean of its divisors is an integer number (8903719081440).

Almost surely, 2^{228485521737858} is an apocalyptic number.

228485521737858 is an abundant number, since it is smaller than the sum of its proper divisors (341352499474302).

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

228485521737858 is a wasteful number, since it uses less digits than its factorization.

228485521737858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93653743.

The product of its digits is 2408448000, while the sum is 75.

The spelling of 228485521737858 in words is "two hundred twenty-eight trillion, four hundred eighty-five billion, five hundred twenty-one million, seven hundred thirty-seven thousand, eight hundred fifty-eight".