163616144 has 80 divisors (see below), whose sum is σ = 351614400. Its totient is φ = 73446912.

The previous prime is 163616119. The next prime is 163616147. The reversal of 163616144 is 441616361.

It is a self number, because there is not a number n which added to its sum of digits gives 163616144.

It is not an unprimeable number, because it can be changed into a prime (163616147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590534 + ... + 590810.

It is an arithmetic number, because the mean of its divisors is an integer number (4395180).

Almost surely, 2^163616144 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 163616144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175807200).

163616144 is an abundant number, since it is smaller than the sum of its proper divisors (187998256).

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

163616144 is a wasteful number, since it uses less digits than its factorization.

163616144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 394 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 163616144 is about 12791.2526360791. The cubic root of 163616144 is about 546.9429781685.

The spelling of 163616144 in words is "one hundred sixty-three million, six hundred sixteen thousand, one hundred forty-four".