28164310189 has 2 divisors, whose sum is σ = 28164310190. Its totient is φ = 28164310188.

The previous prime is 28164310171. The next prime is 28164310199. The reversal of 28164310189 is 98101346182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20979204964 + 7185105225 = 144842^2 + 84765^2 .

It is a cyclic number.

It is not a de Polignac number, because 28164310189 - 2¹¹ = 28164308141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28164310199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14082155094 + 14082155095.

It is an arithmetic number, because the mean of its divisors is an integer number (14082155095).

Almost surely, 2^28164310189 is an apocalyptic number.

It is an amenable number.

28164310189 is a deficient number, since it is larger than the sum of its proper divisors (1).

28164310189 is an equidigital number, since it uses as much as digits as its factorization.

28164310189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 28164310189 in words is "twenty-eight billion, one hundred sixty-four million, three hundred ten thousand, one hundred eighty-nine".