163385549 has 4 divisors (see below), whose sum is σ = 163450236. Its totient is φ = 163320864.

The previous prime is 163385543. The next prime is 163385561. The reversal of 163385549 is 945583361.

163385549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 945583361 = 5297 ⋅178513.

It can be written as a sum of positive squares in 2 ways, for example, as 40729924 + 122655625 = 6382^2 + 11075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163385549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163385543) 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, 28394 + ... + 33659.

It is an arithmetic number, because the mean of its divisors is an integer number (40862559).

Almost surely, 2^163385549 is an apocalyptic number.

It is an amenable number.

163385549 is a deficient number, since it is larger than the sum of its proper divisors (64687).

163385549 is an equidigital number, since it uses as much as digits as its factorization.

163385549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64686.

The product of its digits is 388800, while the sum is 44.

The square root of 163385549 is about 12782.2356808189. The cubic root of 163385549 is about 546.6859097843.

The spelling of 163385549 in words is "one hundred sixty-three million, three hundred eighty-five thousand, five hundred forty-nine".