64360189 has 2 divisors, whose sum is σ = 64360190. Its totient is φ = 64360188.

The previous prime is 64360139. The next prime is 64360199. The reversal of 64360189 is 98106346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43956900 + 20403289 = 6630^2 + 4517^2 .

It is a cyclic number.

It is not a de Polignac number, because 64360189 - 2⁹ = 64359677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64360139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32180094 + 32180095.

It is an arithmetic number, because the mean of its divisors is an integer number (32180095).

Almost surely, 2^64360189 is an apocalyptic number.

It is an amenable number.

64360189 is a deficient number, since it is larger than the sum of its proper divisors (1).

64360189 is an equidigital number, since it uses as much as digits as its factorization.

64360189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 64360189 is about 8022.4802274608. The cubic root of 64360189 is about 400.7489904081.

The spelling of 64360189 in words is "sixty-four million, three hundred sixty thousand, one hundred eighty-nine".