161030269 has 2 divisors, whose sum is σ = 161030270. Its totient is φ = 161030268.

The previous prime is 161030267. The next prime is 161030297. The reversal of 161030269 is 962030161.

It is an a-pointer prime, because the next prime (161030297) can be obtained adding 161030269 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143280900 + 17749369 = 11970^2 + 4213^2 .

It is a cyclic number.

It is not a de Polignac number, because 161030269 - 2¹ = 161030267 is a prime.

It is a super-2 number, since 2×161030269² = 51861495068424722, which contains 22 as substring.

Together with 161030267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161030267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80515134 + 80515135.

It is an arithmetic number, because the mean of its divisors is an integer number (80515135).

Almost surely, 2^161030269 is an apocalyptic number.

It is an amenable number.

161030269 is a deficient number, since it is larger than the sum of its proper divisors (1).

161030269 is an equidigital number, since it uses as much as digits as its factorization.

161030269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 161030269 is about 12689.7702500873. The cubic root of 161030269 is about 544.0462729616.

The spelling of 161030269 in words is "one hundred sixty-one million, thirty thousand, two hundred sixty-nine".