163438560 has 120 divisors (see below), whose sum is σ = 576847656. Its totient is φ = 43580160.

The previous prime is 163438559. The next prime is 163438573. The reversal of 163438560 is 65834361.

163438560 is a `hidden beast` number, since 1 + 63 + 4 + 38 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 6655 + ... + 19265.

Almost surely, 2^163438560 is an apocalyptic number.

163438560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163438560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288423828).

163438560 is an abundant number, since it is smaller than the sum of its proper divisors (413409096).

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

163438560 is a wasteful number, since it uses less digits than its factorization.

163438560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12638 (or 12621 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 163438560 is about 12784.3091326829. The cubic root of 163438560 is about 546.7450280953.

The spelling of 163438560 in words is "one hundred sixty-three million, four hundred thirty-eight thousand, five hundred sixty".