228654199681 has 2 divisors, whose sum is σ = 228654199682. Its totient is φ = 228654199680.

The previous prime is 228654199619. The next prime is 228654199687. The reversal of 228654199681 is 186991456822.

228654199681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136222999056 + 92431200625 = 369084^2 + 304025^2 .

It is a cyclic number.

It is not a de Polignac number, because 228654199681 - 2¹⁷ = 228654068609 is a prime.

It is a super-2 number, since 2×228654199681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228654199687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114327099840 + 114327099841.

It is an arithmetic number, because the mean of its divisors is an integer number (114327099841).

Almost surely, 2^228654199681 is an apocalyptic number.

It is an amenable number.

228654199681 is a deficient number, since it is larger than the sum of its proper divisors (1).

228654199681 is an equidigital number, since it uses as much as digits as its factorization.

228654199681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14929920, while the sum is 61.

The spelling of 228654199681 in words is "two hundred twenty-eight billion, six hundred fifty-four million, one hundred ninety-nine thousand, six hundred eighty-one".