163608393 has 32 divisors (see below), whose sum is σ = 239599360. Its totient is φ = 99290880.

The previous prime is 163608383. The next prime is 163608437. The reversal of 163608393 is 393806361.

It is not a de Polignac number, because 163608393 - 2⁴ = 163608377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163608383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 678753 + ... + 678993.

It is an arithmetic number, because the mean of its divisors is an integer number (7487480).

Almost surely, 2^163608393 is an apocalyptic number.

163608393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

163608393 is a deficient number, since it is larger than the sum of its proper divisors (75990967).

163608393 is a wasteful number, since it uses less digits than its factorization.

163608393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 163608393 is about 12790.9496520000. The cubic root of 163608393 is about 546.9343412418.

It can be divided in two parts, 16360 and 8393, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 163608393 in words is "one hundred sixty-three million, six hundred eight thousand, three hundred ninety-three".