163365144 has 24 divisors (see below), whose sum is σ = 408569460. Its totient is φ = 54434176.

The previous prime is 163365143. The next prime is 163365157. The reversal of 163365144 is 441563361.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163365143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61312 + ... + 63920.

Almost surely, 2^163365144 is an apocalyptic number.

It is an amenable number.

163365144 is an abundant number, since it is smaller than the sum of its proper divisors (245204316).

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

163365144 is an frugal number, since it uses more digits than its factorization.

163365144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5227 (or 2614 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 163365144 is about 12781.4374778426. The cubic root of 163365144 is about 546.6631505491.

The spelling of 163365144 in words is "one hundred sixty-three million, three hundred sixty-five thousand, one hundred forty-four".