16105189 has 2 divisors, whose sum is σ = 16105190. Its totient is φ = 16105188.

The previous prime is 16105147. The next prime is 16105241. The reversal of 16105189 is 98150161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14884164 + 1221025 = 3858^2 + 1105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16105189 is a prime.

It is a super-2 number, since 2×16105189² = 518754225451442, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16105189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16105109) 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, 8052594 + 8052595.

It is an arithmetic number, because the mean of its divisors is an integer number (8052595).

Almost surely, 2^16105189 is an apocalyptic number.

It is an amenable number.

16105189 is a deficient number, since it is larger than the sum of its proper divisors (1).

16105189 is an equidigital number, since it uses as much as digits as its factorization.

16105189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 16105189 is about 4013.1270849551. The cubic root of 16105189 is about 252.5352118982.

The spelling of 16105189 in words is "sixteen million, one hundred five thousand, one hundred eighty-nine".