163605156 has 96 divisors (see below), whose sum is σ = 455497728. Its totient is φ = 45048960.

The previous prime is 163605149. The next prime is 163605163. The reversal of 163605156 is 651506361.

It is an interprime number because it is at equal distance from previous prime (163605149) and next prime (163605163).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114261 + ... + 115683.

It is an arithmetic number, because the mean of its divisors is an integer number (4744768).

Almost surely, 2^163605156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163605156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227748864).

163605156 is an abundant number, since it is smaller than the sum of its proper divisors (291892572).

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

163605156 is a wasteful number, since it uses less digits than its factorization.

163605156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 163605156 is about 12790.8231165942. The cubic root of 163605156 is about 546.9307341771.

The spelling of 163605156 in words is "one hundred sixty-three million, six hundred five thousand, one hundred fifty-six".