163385605 has 4 divisors (see below), whose sum is σ = 196062732. Its totient is φ = 130708480.

The previous prime is 163385587. The next prime is 163385611. The reversal of 163385605 is 506583361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50154724 + 113230881 = 7082^2 + 10641^2 .

It is not a de Polignac number, because 163385605 - 2⁷ = 163385477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16338556 + ... + 16338565.

It is an arithmetic number, because the mean of its divisors is an integer number (49015683).

Almost surely, 2^163385605 is an apocalyptic number.

It is an amenable number.

163385605 is a deficient number, since it is larger than the sum of its proper divisors (32677127).

163385605 is an equidigital number, since it uses as much as digits as its factorization.

163385605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32677126.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 163385605 is about 12782.2378713588. The cubic root of 163385605 is about 546.6859722427.

The spelling of 163385605 in words is "one hundred sixty-three million, three hundred eighty-five thousand, six hundred five".