163443013 has 2 divisors, whose sum is σ = 163443014. Its totient is φ = 163443012.

The previous prime is 163443001. The next prime is 163443029. The reversal of 163443013 is 310344361.

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., 97476129 + 65966884 = 9873^2 + 8122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163443013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163443713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81721506 + 81721507.

It is an arithmetic number, because the mean of its divisors is an integer number (81721507).

Almost surely, 2^163443013 is an apocalyptic number.

It is an amenable number.

163443013 is a deficient number, since it is larger than the sum of its proper divisors (1).

163443013 is an equidigital number, since it uses as much as digits as its factorization.

163443013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 163443013 is about 12784.4832903016. The cubic root of 163443013 is about 546.7499935361.

Adding to 163443013 its reverse (310344361), we get a palindrome (473787374).

The spelling of 163443013 in words is "one hundred sixty-three million, four hundred forty-three thousand, thirteen".