163423533 has 64 divisors (see below), whose sum is σ = 296497152. Its totient is φ = 77552640.

The previous prime is 163423531. The next prime is 163423549. The reversal of 163423533 is 335324361.

It is not a de Polignac number, because 163423533 - 2¹ = 163423531 is a prime.

It is a super-2 number, since 2×163423533² = 53414502276404178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163423533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163423531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 105978 + ... + 107508.

It is an arithmetic number, because the mean of its divisors is an integer number (4632768).

Almost surely, 2^163423533 is an apocalyptic number.

163423533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

163423533 is a deficient number, since it is larger than the sum of its proper divisors (133073619).

163423533 is a wasteful number, since it uses less digits than its factorization.

163423533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594.

The product of its digits is 19440, while the sum is 30.

The square root of 163423533 is about 12783.7214065389. The cubic root of 163423533 is about 546.7282711575.

Adding to 163423533 its reverse (335324361), we get a palindrome (498747894).

The spelling of 163423533 in words is "one hundred sixty-three million, four hundred twenty-three thousand, five hundred thirty-three".