163897344 has 280 divisors, whose sum is σ = 555056040. Its totient is φ = 47775744.

The previous prime is 163897303. The next prime is 163897351. The reversal of 163897344 is 443798361.

163897344 is a `hidden beast` number, since 1 + 638 + 9 + 7 + 3 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 163897344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8626167 + ... + 8626185.

It is an arithmetic number, because the mean of its divisors is an integer number (1982343).

Almost surely, 2^163897344 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 163897344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277528020).

163897344 is an abundant number, since it is smaller than the sum of its proper divisors (391158696).

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

163897344 is an equidigital number, since it uses as much as digits as its factorization.

163897344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 37 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 163897344 is about 12802.2398040343. The cubic root of 163897344 is about 547.2561345921.

The spelling of 163897344 in words is "one hundred sixty-three million, eight hundred ninety-seven thousand, three hundred forty-four".