20146169 has 2 divisors, whose sum is σ = 20146170. Its totient is φ = 20146168.

The previous prime is 20146157. The next prime is 20146171. The reversal of 20146169 is 96164102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12334144 + 7812025 = 3512^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 20146169 - 2⁴ = 20146153 is a prime.

It is a super-2 number, since 2×20146169² = 811736250753122, which contains 22 as substring.

Together with 20146171, 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 (20146109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10073084 + 10073085.

It is an arithmetic number, because the mean of its divisors is an integer number (10073085).

Almost surely, 2^20146169 is an apocalyptic number.

It is an amenable number.

20146169 is a deficient number, since it is larger than the sum of its proper divisors (1).

20146169 is an equidigital number, since it uses as much as digits as its factorization.

20146169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 20146169 is about 4488.4483956040. The cubic root of 20146169 is about 272.1014300565.

The spelling of 20146169 in words is "twenty million, one hundred forty-six thousand, one hundred sixty-nine".