201369169 has 2 divisors, whose sum is σ = 201369170. Its totient is φ = 201369168.

The previous prime is 201369167. The next prime is 201369173. The reversal of 201369169 is 961963102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105329169 + 96040000 = 10263^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 201369169 - 2¹ = 201369167 is a prime.

It is a super-2 number, since 2×201369169² = 81099084447501122, which contains 22 as substring.

Together with 201369167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (201369167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100684584 + 100684585.

It is an arithmetic number, because the mean of its divisors is an integer number (100684585).

Almost surely, 2^201369169 is an apocalyptic number.

It is an amenable number.

201369169 is a deficient number, since it is larger than the sum of its proper divisors (1).

201369169 is an equidigital number, since it uses as much as digits as its factorization.

201369169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 201369169 is about 14190.4604928804. The cubic root of 201369169 is about 586.1350054120.

It can be divided in two parts, 201 and 369169, that added together give a triangular number (369370 = T₈₅₉).

The spelling of 201369169 in words is "two hundred one million, three hundred sixty-nine thousand, one hundred sixty-nine".