16211189 has 2 divisors, whose sum is σ = 16211190. Its totient is φ = 16211188.

The previous prime is 16211101. The next prime is 16211197. The reversal of 16211189 is 98111261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13032100 + 3179089 = 3610^2 + 1783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16211189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16411189) 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, 8105594 + 8105595.

It is an arithmetic number, because the mean of its divisors is an integer number (8105595).

Almost surely, 2^16211189 is an apocalyptic number.

It is an amenable number.

16211189 is a deficient number, since it is larger than the sum of its proper divisors (1).

16211189 is an equidigital number, since it uses as much as digits as its factorization.

16211189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 29.

The square root of 16211189 is about 4026.3120842776. The cubic root of 16211189 is about 253.0880403081.

The spelling of 16211189 in words is "sixteen million, two hundred eleven thousand, one hundred eighty-nine".