228381811169 has 4 divisors (see below), whose sum is σ = 235748966400. Its totient is φ = 221014655940.

The previous prime is 228381811093. The next prime is 228381811211. The reversal of 228381811169 is 961118183822.

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 228381811169 - 2⁸ = 228381810913 is a prime.

It is a super-2 number, since 2×228381811169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228381811369) 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, 3683577569 + ... + 3683577630.

It is an arithmetic number, because the mean of its divisors is an integer number (58937241600).

Almost surely, 2^228381811169 is an apocalyptic number.

It is an amenable number.

228381811169 is a deficient number, since it is larger than the sum of its proper divisors (7367155231).

228381811169 is an equidigital number, since it uses as much as digits as its factorization.

228381811169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367155230.

The product of its digits is 331776, while the sum is 50.

The spelling of 228381811169 in words is "two hundred twenty-eight billion, three hundred eighty-one million, eight hundred eleven thousand, one hundred sixty-nine".