163844545 has 8 divisors (see below), whose sum is σ = 197243496. Its totient is φ = 130655616.

The previous prime is 163844539. The next prime is 163844557. The reversal of 163844545 is 545448361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1817104 + 162027441 = 1348^2 + 12729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163844545 - 2³ = 163844537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163844498 and 163844507.

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, 50782 + ... + 53911.

It is an arithmetic number, because the mean of its divisors is an integer number (24655437).

Almost surely, 2^163844545 is an apocalyptic number.

It is an amenable number.

163844545 is a deficient number, since it is larger than the sum of its proper divisors (33398951).

163844545 is a wasteful number, since it uses less digits than its factorization.

163844545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105011.

The product of its digits is 230400, while the sum is 40.

The square root of 163844545 is about 12800.1775378313. The cubic root of 163844545 is about 547.1973626819.

The spelling of 163844545 in words is "one hundred sixty-three million, eight hundred forty-four thousand, five hundred forty-five".