161295853 has 2 divisors, whose sum is σ = 161295854. Its totient is φ = 161295852.

The previous prime is 161295851. The next prime is 161295859. The reversal of 161295853 is 358592161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157678249 + 3617604 = 12557^2 + 1902^2 .

It is a cyclic number.

It is not a de Polignac number, because 161295853 - 2¹ = 161295851 is a prime.

Together with 161295851, 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 (161295851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80647926 + 80647927.

It is an arithmetic number, because the mean of its divisors is an integer number (80647927).

Almost surely, 2^161295853 is an apocalyptic number.

It is an amenable number.

161295853 is a deficient number, since it is larger than the sum of its proper divisors (1).

161295853 is an equidigital number, since it uses as much as digits as its factorization.

161295853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The square root of 161295853 is about 12700.2304309804. The cubic root of 161295853 is about 544.3452035584.

The spelling of 161295853 in words is "one hundred sixty-one million, two hundred ninety-five thousand, eight hundred fifty-three".