161086853 has 2 divisors, whose sum is σ = 161086854. Its totient is φ = 161086852.

The previous prime is 161086847. The next prime is 161086879. The reversal of 161086853 is 358680161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154206724 + 6880129 = 12418^2 + 2623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161086853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161086823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80543426 + 80543427.

It is an arithmetic number, because the mean of its divisors is an integer number (80543427).

Almost surely, 2^161086853 is an apocalyptic number.

It is an amenable number.

161086853 is a deficient number, since it is larger than the sum of its proper divisors (1).

161086853 is an equidigital number, since it uses as much as digits as its factorization.

161086853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 161086853 is about 12691.9995666562. Note that the first 3 decimals coincide. The cubic root of 161086853 is about 544.1099891591.

The spelling of 161086853 in words is "one hundred sixty-one million, eighty-six thousand, eight hundred fifty-three".