228189451536 has 40 divisors (see below), whose sum is σ = 654988241760. Its totient is φ = 76063150368.

The previous prime is 228189451517. The next prime is 228189451543. The reversal of 228189451536 is 635154981822.

228189451536 is a `hidden beast` number, since 2 + 2 + 8 + 1 + 8 + 94 + 515 + 36 = 666.

It is a super-3 number, since 3×228189451536³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264107730 + ... + 264108593.

It is an arithmetic number, because the mean of its divisors is an integer number (16374706044).

Almost surely, 2^228189451536 is an apocalyptic number.

It is an amenable number.

228189451536 is an abundant number, since it is smaller than the sum of its proper divisors (426798790224).

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

228189451536 is a wasteful number, since it uses less digits than its factorization.

228189451536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528216340 (or 528216328 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 228189451536 in words is "two hundred twenty-eight billion, one hundred eighty-nine million, four hundred fifty-one thousand, five hundred thirty-six".