163330393 has 4 divisors (see below), whose sum is σ = 163358208. Its totient is φ = 163302580.

The previous prime is 163330381. The next prime is 163330399. The reversal of 163330393 is 393033361.

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 163330393 - 2⁵ = 163330361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163330399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1273 + ... + 18118.

It is an arithmetic number, because the mean of its divisors is an integer number (40839552).

Almost surely, 2^163330393 is an apocalyptic number.

It is an amenable number.

163330393 is a deficient number, since it is larger than the sum of its proper divisors (27815).

163330393 is an equidigital number, since it uses as much as digits as its factorization.

163330393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27814.

The product of its (nonzero) digits is 13122, while the sum is 31.

The square root of 163330393 is about 12780.0779731581. The cubic root of 163330393 is about 546.6243857758.

The spelling of 163330393 in words is "one hundred sixty-three million, three hundred thirty thousand, three hundred ninety-three".