163544213 has 6 divisors (see below), whose sum is σ = 190245366. Its totient is φ = 140180712.

The previous prime is 163544207. The next prime is 163544219. The reversal of 163544213 is 312445361.

It is an interprime number because it is at equal distance from previous prime (163544207) and next prime (163544219).

It can be written as a sum of positive squares in only one way, i.e., 150749284 + 12794929 = 12278^2 + 3577^2 .

It is not a de Polignac number, because 163544213 - 2⁴ = 163544197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163544219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1668770 + ... + 1668867.

It is an arithmetic number, because the mean of its divisors is an integer number (31707561).

Almost surely, 2^163544213 is an apocalyptic number.

It is an amenable number.

163544213 is a deficient number, since it is larger than the sum of its proper divisors (26701153).

163544213 is an equidigital number, since it uses as much as digits as its factorization.

163544213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337651 (or 3337644 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 163544213 is about 12788.4406007926. The cubic root of 163544213 is about 546.8628150885.

Adding to 163544213 its reverse (312445361), we get a palindrome (475989574).

The spelling of 163544213 in words is "one hundred sixty-three million, five hundred forty-four thousand, two hundred thirteen".