163604541 has 4 divisors (see below), whose sum is σ = 218139392. Its totient is φ = 109069692.

The previous prime is 163604527. The next prime is 163604591. The reversal of 163604541 is 145406361.

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 not a de Polignac number, because 163604541 - 2⁶ = 163604477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163604499 and 163604508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163604591) 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, 27267421 + ... + 27267426.

It is an arithmetic number, because the mean of its divisors is an integer number (54534848).

Almost surely, 2^163604541 is an apocalyptic number.

It is an amenable number.

163604541 is a deficient number, since it is larger than the sum of its proper divisors (54534851).

163604541 is an equidigital number, since it uses as much as digits as its factorization.

163604541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54534850.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 163604541 is about 12790.7990758983. The cubic root of 163604541 is about 546.9300488629.

The spelling of 163604541 in words is "one hundred sixty-three million, six hundred four thousand, five hundred forty-one".