228532618169 has 2 divisors, whose sum is σ = 228532618170. Its totient is φ = 228532618168.

The previous prime is 228532618117. The next prime is 228532618183. The reversal of 228532618169 is 961816235822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198599466025 + 29933152144 = 445645^2 + 173012^2 .

It is a cyclic number.

It is not a de Polignac number, because 228532618169 - 2¹² = 228532614073 is a prime.

It is a super-2 number, since 2×228532618169² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228532618169.

It is not a weakly prime, because it can be changed into another prime (228532608169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114266309084 + 114266309085.

It is an arithmetic number, because the mean of its divisors is an integer number (114266309085).

Almost surely, 2^228532618169 is an apocalyptic number.

It is an amenable number.

228532618169 is a deficient number, since it is larger than the sum of its proper divisors (1).

228532618169 is an equidigital number, since it uses as much as digits as its factorization.

228532618169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The spelling of 228532618169 in words is "two hundred twenty-eight billion, five hundred thirty-two million, six hundred eighteen thousand, one hundred sixty-nine".