163997316 has 108 divisors (see below), whose sum is σ = 497952000. Its totient is φ = 45329760.

The previous prime is 163997279. The next prime is 163997329. The reversal of 163997316 is 613799361.

163997316 is a `hidden beast` number, since 1 + 639 + 9 + 7 + 3 + 1 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 53185 + ... + 56183.

Almost surely, 2^163997316 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 163997316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248976000).

163997316 is an abundant number, since it is smaller than the sum of its proper divisors (333954684).

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

163997316 is a wasteful number, since it uses less digits than its factorization.

163997316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054 (or 3042 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 163997316 is about 12806.1436818427. The cubic root of 163997316 is about 547.3673814024.

The spelling of 163997316 in words is "one hundred sixty-three million, nine hundred ninety-seven thousand, three hundred sixteen".