163003645 has 24 divisors (see below), whose sum is σ = 237441024. Its totient is φ = 106910496.

The previous prime is 163003639. The next prime is 163003663. The reversal of 163003645 is 546300361.

It is not a de Polignac number, because 163003645 - 2³ = 163003637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8829 + ... + 20098.

It is an arithmetic number, because the mean of its divisors is an integer number (9893376).

Almost surely, 2^163003645 is an apocalyptic number.

It is an amenable number.

163003645 is a deficient number, since it is larger than the sum of its proper divisors (74437379).

163003645 is a wasteful number, since it uses less digits than its factorization.

163003645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28969 (or 28962 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 163003645 is about 12767.2880832227. The cubic root of 163003645 is about 546.2596288800.

The spelling of 163003645 in words is "one hundred sixty-three million, three thousand, six hundred forty-five".