163699241 has 2 divisors, whose sum is σ = 163699242. Its totient is φ = 163699240.

The previous prime is 163699199. The next prime is 163699243. The reversal of 163699241 is 142996361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158659216 + 5040025 = 12596^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 163699241 - 2¹⁰ = 163698217 is a prime.

It is a Sophie Germain prime.

Together with 163699243, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (163699243) 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, 81849620 + 81849621.

It is an arithmetic number, because the mean of its divisors is an integer number (81849621).

Almost surely, 2^163699241 is an apocalyptic number.

It is an amenable number.

163699241 is a deficient number, since it is larger than the sum of its proper divisors (1).

163699241 is an equidigital number, since it uses as much as digits as its factorization.

163699241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 163699241 is about 12794.5004201024. The cubic root of 163699241 is about 547.0355558883.

The spelling of 163699241 in words is "one hundred sixty-three million, six hundred ninety-nine thousand, two hundred forty-one".