163788156 has 120 divisors (see below), whose sum is σ = 492994656. Its totient is φ = 46448640.

The previous prime is 163788139. The next prime is 163788173. The reversal of 163788156 is 651887361.

163788156 is a `hidden beast` number, since 1 + 637 + 8 + 8 + 1 + 5 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (163788139) and next prime (163788173).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 582736 + ... + 583016.

Almost surely, 2^163788156 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 163788156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246497328).

163788156 is an abundant number, since it is smaller than the sum of its proper divisors (329206500).

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

163788156 is a wasteful number, since it uses less digits than its factorization.

163788156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 550 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 163788156 is about 12797.9746835193. The cubic root of 163788156 is about 547.1345807065.

The spelling of 163788156 in words is "one hundred sixty-three million, seven hundred eighty-eight thousand, one hundred fifty-six".