16550189 has 2 divisors, whose sum is σ = 16550190. Its totient is φ = 16550188.

The previous prime is 16550153. The next prime is 16550239. The reversal of 16550189 is 98105561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13801225 + 2748964 = 3715^2 + 1658^2 .

It is a cyclic number.

It is not a de Polignac number, because 16550189 - 2⁸ = 16549933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16550119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8275094 + 8275095.

It is an arithmetic number, because the mean of its divisors is an integer number (8275095).

Almost surely, 2^16550189 is an apocalyptic number.

It is an amenable number.

16550189 is a deficient number, since it is larger than the sum of its proper divisors (1).

16550189 is an equidigital number, since it uses as much as digits as its factorization.

16550189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 16550189 is about 4068.1923504181. The cubic root of 16550189 is about 254.8400329522.

The spelling of 16550189 in words is "sixteen million, five hundred fifty thousand, one hundred eighty-nine".