163500645 has 96 divisors (see below), whose sum is σ = 348413184. Its totient is φ = 63866880.

The previous prime is 163500641. The next prime is 163500671. The reversal of 163500645 is 546005361.

It is not a de Polignac number, because 163500645 - 2² = 163500641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163500641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 215607 + ... + 216363.

It is an arithmetic number, because the mean of its divisors is an integer number (3629304).

Almost surely, 2^163500645 is an apocalyptic number.

163500645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163500645 is an abundant number, since it is smaller than the sum of its proper divisors (184912539).

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

163500645 is a wasteful number, since it uses less digits than its factorization.

163500645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 163500645 is about 12786.7370740154. The cubic root of 163500645 is about 546.8142495565.

The spelling of 163500645 in words is "one hundred sixty-three million, five hundred thousand, six hundred forty-five".