163346393 has 4 divisors (see below), whose sum is σ = 186681600. Its totient is φ = 140011188.

The previous prime is 163346383. The next prime is 163346399. The reversal of 163346393 is 393643361.

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 163346393 - 2⁸ = 163346137 is a prime.

It is a super-2 number, since 2×163346393² = 53364088212220898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163346399) 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, 11667593 + ... + 11667606.

It is an arithmetic number, because the mean of its divisors is an integer number (46670400).

Almost surely, 2^163346393 is an apocalyptic number.

It is an amenable number.

163346393 is a deficient number, since it is larger than the sum of its proper divisors (23335207).

163346393 is an equidigital number, since it uses as much as digits as its factorization.

163346393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23335206.

The product of its digits is 104976, while the sum is 38.

The square root of 163346393 is about 12780.7039321001. The cubic root of 163346393 is about 546.6422344739.

The spelling of 163346393 in words is "one hundred sixty-three million, three hundred forty-six thousand, three hundred ninety-three".