163308533 has 4 divisors (see below), whose sum is σ = 170408928. Its totient is φ = 156208140.

The previous prime is 163308451. The next prime is 163308557. The reversal of 163308533 is 335803361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163308533 - 2¹² = 163304437 is a prime.

It is a super-2 number, since 2×163308533² = 53339353901224178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163308533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163308583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550163 + ... + 3550208.

It is an arithmetic number, because the mean of its divisors is an integer number (42602232).

Almost surely, 2^163308533 is an apocalyptic number.

It is an amenable number.

163308533 is a deficient number, since it is larger than the sum of its proper divisors (7100395).

163308533 is an equidigital number, since it uses as much as digits as its factorization.

163308533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100394.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 163308533 is about 12779.2227071915. Note that the first 3 decimals coincide. The cubic root of 163308533 is about 546.5999981078.

The spelling of 163308533 in words is "one hundred sixty-three million, three hundred eight thousand, five hundred thirty-three".