228533912869 has 4 divisors (see below), whose sum is σ = 228915439200. Its totient is φ = 228152386540.

The previous prime is 228533912839. The next prime is 228533912891. The reversal of 228533912869 is 968219335822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228533912869 - 2¹¹ = 228533910821 is a prime.

It is a super-2 number, since 2×228533912869² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228533912839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190762267 + ... + 190763464.

It is an arithmetic number, because the mean of its divisors is an integer number (57228859800).

Almost surely, 2^228533912869 is an apocalyptic number.

It is an amenable number.

228533912869 is a deficient number, since it is larger than the sum of its proper divisors (381526331).

228533912869 is an equidigital number, since it uses as much as digits as its factorization.

228533912869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381526330.

The product of its digits is 11197440, while the sum is 58.

The spelling of 228533912869 in words is "two hundred twenty-eight billion, five hundred thirty-three million, nine hundred twelve thousand, eight hundred sixty-nine".