16204579189 has 2 divisors, whose sum is σ = 16204579190. Its totient is φ = 16204579188.

The previous prime is 16204579187. The next prime is 16204579217. The reversal of 16204579189 is 98197540261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10376478225 + 5828100964 = 101865^2 + 76342^2 .

It is a cyclic number.

It is not a de Polignac number, because 16204579189 - 2¹ = 16204579187 is a prime.

Together with 16204579187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16204579187) 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, 8102289594 + 8102289595.

It is an arithmetic number, because the mean of its divisors is an integer number (8102289595).

Almost surely, 2^16204579189 is an apocalyptic number.

It is an amenable number.

16204579189 is a deficient number, since it is larger than the sum of its proper divisors (1).

16204579189 is an equidigital number, since it uses as much as digits as its factorization.

16204579189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 16204579189 in words is "sixteen billion, two hundred four million, five hundred seventy-nine thousand, one hundred eighty-nine".