163443001 has 2 divisors, whose sum is σ = 163443002. Its totient is φ = 163443000.

The previous prime is 163442999. The next prime is 163443013. The reversal of 163443001 is 100344361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144961600 + 18481401 = 12040^2 + 4299^2 .

It is a cyclic number.

It is not a de Polignac number, because 163443001 - 2¹ = 163442999 is a prime.

It is a super-2 number, since 2×163443001² = 53427229151772002, which contains 22 as substring.

Together with 163442999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (163443041) 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, 81721500 + 81721501.

It is an arithmetic number, because the mean of its divisors is an integer number (81721501).

Almost surely, 2^163443001 is an apocalyptic number.

It is an amenable number.

163443001 is a deficient number, since it is larger than the sum of its proper divisors (1).

163443001 is an equidigital number, since it uses as much as digits as its factorization.

163443001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 163443001 is about 12784.4828209826. The cubic root of 163443001 is about 546.7499801553.

Adding to 163443001 its reverse (100344361), we get a palindrome (263787362).

The spelling of 163443001 in words is "one hundred sixty-three million, four hundred forty-three thousand, one".