161027369 has 2 divisors, whose sum is σ = 161027370. Its totient is φ = 161027368.

The previous prime is 161027353. The next prime is 161027407. The reversal of 161027369 is 963720161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160985344 + 42025 = 12688^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 161027369 - 2⁴ = 161027353 is a prime.

It is a super-2 number, since 2×161027369² = 51859627134124322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (161027329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80513684 + 80513685.

It is an arithmetic number, because the mean of its divisors is an integer number (80513685).

Almost surely, 2^161027369 is an apocalyptic number.

It is an amenable number.

161027369 is a deficient number, since it is larger than the sum of its proper divisors (1).

161027369 is an equidigital number, since it uses as much as digits as its factorization.

161027369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 161027369 is about 12689.6559843047. The cubic root of 161027369 is about 544.0430070256.

The spelling of 161027369 in words is "one hundred sixty-one million, twenty-seven thousand, three hundred sixty-nine".