19696169 has 2 divisors, whose sum is σ = 19696170. Its totient is φ = 19696168.

The previous prime is 19696163. The next prime is 19696177. The reversal of 19696169 is 96169691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16321600 + 3374569 = 4040^2 + 1837^2 .

It is a cyclic number.

It is not a de Polignac number, because 19696169 - 2⁴ = 19696153 is a prime.

It is a super-2 number, since 2×19696169² = 775878146553122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19696163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9848084 + 9848085.

It is an arithmetic number, because the mean of its divisors is an integer number (9848085).

Almost surely, 2^19696169 is an apocalyptic number.

It is an amenable number.

19696169 is a deficient number, since it is larger than the sum of its proper divisors (1).

19696169 is an equidigital number, since it uses as much as digits as its factorization.

19696169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 47.

The square root of 19696169 is about 4438.0366154416. The cubic root of 19696169 is about 270.0602014822.

The spelling of 19696169 in words is "nineteen million, six hundred ninety-six thousand, one hundred sixty-nine".