163604532 has 144 divisors (see below), whose sum is σ = 506761920. Its totient is φ = 40578048.

The previous prime is 163604527. The next prime is 163604591. The reversal of 163604532 is 235406361.

163604532 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 163604532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129319 + ... + 130577.

It is an arithmetic number, because the mean of its divisors is an integer number (3519180).

Almost surely, 2^163604532 is an apocalyptic number.

163604532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163604532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253380960).

163604532 is an abundant number, since it is smaller than the sum of its proper divisors (343157388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163604532 is a wasteful number, since it uses less digits than its factorization.

163604532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 163604532 is about 12790.7987240829. The cubic root of 163604532 is about 546.9300388339.

The spelling of 163604532 in words is "one hundred sixty-three million, six hundred four thousand, five hundred thirty-two".