163788560 has 40 divisors (see below), whose sum is σ = 410103960. Its totient is φ = 60475392.

The previous prime is 163788533. The next prime is 163788571. The reversal of 163788560 is 65887361.

It can be written as a sum of positive squares in 4 ways, for example, as 1175056 + 162613504 = 1084^2 + 12752^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77705 + ... + 79784.

It is an arithmetic number, because the mean of its divisors is an integer number (10252599).

Almost surely, 2^163788560 is an apocalyptic number.

163788560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163788560 is an abundant number, since it is smaller than the sum of its proper divisors (246315400).

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

163788560 is a wasteful number, since it uses less digits than its factorization.

163788560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157515 (or 157509 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 163788560 is about 12797.9904672570. The cubic root of 163788560 is about 547.1350305603.

The spelling of 163788560 in words is "one hundred sixty-three million, seven hundred eighty-eight thousand, five hundred sixty".