16219197 has 10 divisors (see below), whose sum is σ = 24228798. Its totient is φ = 10812744.

The previous prime is 16219171. The next prime is 16219211. The reversal of 16219197 is 79191261.

It can be written as a sum of positive squares in only one way, i.e., 15256836 + 962361 = 3906^2 + 981^2 .

It is not a de Polignac number, because 16219197 - 2⁷ = 16219069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16211197) 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 in 9 ways as a sum of consecutive naturals, for example, 100038 + ... + 100199.

Almost surely, 2^16219197 is an apocalyptic number.

It is an amenable number.

16219197 is a deficient number, since it is larger than the sum of its proper divisors (8009601).

16219197 is an equidigital number, since it uses as much as digits as its factorization.

16219197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200249 (or 200240 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 16219197 is about 4027.3064199288. The cubic root of 16219197 is about 253.1297069084.

The spelling of 16219197 in words is "sixteen million, two hundred nineteen thousand, one hundred ninety-seven".