163867141 has 2 divisors, whose sum is σ = 163867142. Its totient is φ = 163867140.

The previous prime is 163867103. The next prime is 163867159. The reversal of 163867141 is 141768361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122213025 + 41654116 = 11055^2 + 6454^2 .

It is a cyclic number.

It is not a de Polignac number, because 163867141 - 2¹³ = 163858949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163867141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163867181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81933570 + 81933571.

It is an arithmetic number, because the mean of its divisors is an integer number (81933571).

Almost surely, 2^163867141 is an apocalyptic number.

It is an amenable number.

163867141 is a deficient number, since it is larger than the sum of its proper divisors (1).

163867141 is an equidigital number, since it uses as much as digits as its factorization.

163867141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 163867141 is about 12801.0601514093. The cubic root of 163867141 is about 547.2225164096. Note that the first 3 decimals are identical.

The spelling of 163867141 in words is "one hundred sixty-three million, eight hundred sixty-seven thousand, one hundred forty-one".