16290191 has 2 divisors, whose sum is σ = 16290192. Its totient is φ = 16290190.

The previous prime is 16290173. The next prime is 16290203. The reversal of 16290191 is 19109261.

It is a strong prime.

It is an emirp because it is prime and its reverse (19109261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16290191 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 (16290121) 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, 8145095 + 8145096.

It is an arithmetic number, because the mean of its divisors is an integer number (8145096).

Almost surely, 2^16290191 is an apocalyptic number.

16290191 is a deficient number, since it is larger than the sum of its proper divisors (1).

16290191 is an equidigital number, since it uses as much as digits as its factorization.

16290191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 16290191 is about 4036.1108755831. The cubic root of 16290191 is about 253.4984989803.

The spelling of 16290191 in words is "sixteen million, two hundred ninety thousand, one hundred ninety-one".