20330369 has 2 divisors, whose sum is σ = 20330370. Its totient is φ = 20330368.

The previous prime is 20330339. The next prime is 20330371. The reversal of 20330369 is 96303302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20295025 + 35344 = 4505^2 + 188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20330369 is a prime.

It is a super-2 number, since 2×20330369² = 826647807352322, which contains 22 as substring.

Together with 20330371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20330309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165184 + 10165185.

It is an arithmetic number, because the mean of its divisors is an integer number (10165185).

Almost surely, 2^20330369 is an apocalyptic number.

It is an amenable number.

20330369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330369 is an equidigital number, since it uses as much as digits as its factorization.

20330369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 20330369 is about 4508.9210461040. The cubic root of 20330369 is about 272.9282059285.

The spelling of 20330369 in words is "twenty million, three hundred thirty thousand, three hundred sixty-nine".