16422191 has 8 divisors (see below), whose sum is σ = 17058960. Its totient is φ = 15795648.

The previous prime is 16422167. The next prime is 16422193. The reversal of 16422191 is 19122461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16422191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16422191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16422193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800 + ... + 5786.

It is an arithmetic number, because the mean of its divisors is an integer number (2132370).

Almost surely, 2^16422191 is an apocalyptic number.

16422191 is a deficient number, since it is larger than the sum of its proper divisors (636769).

16422191 is an equidigital number, since it uses as much as digits as its factorization.

16422191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113.

The product of its digits is 864, while the sum is 26.

The square root of 16422191 is about 4052.4302584992. The cubic root of 16422191 is about 254.1813603378.

The spelling of 16422191 in words is "sixteen million, four hundred twenty-two thousand, one hundred ninety-one".