163995523 has 8 divisors (see below), whose sum is σ = 165340368. Its totient is φ = 162655584.

The previous prime is 163995521. The next prime is 163995553. The reversal of 163995523 is 325599361.

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 163995523 - 2¹ = 163995521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163995523.

It is not an unprimeable number, because it can be changed into a prime (163995521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93765 + ... + 95497.

It is an arithmetic number, because the mean of its divisors is an integer number (20667546).

Almost surely, 2^163995523 is an apocalyptic number.

163995523 is a deficient number, since it is larger than the sum of its proper divisors (1344845).

163995523 is a wasteful number, since it uses less digits than its factorization.

163995523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453.

The product of its digits is 218700, while the sum is 43.

The square root of 163995523 is about 12806.0736761897. The cubic root of 163995523 is about 547.3653865867.

The spelling of 163995523 in words is "one hundred sixty-three million, nine hundred ninety-five thousand, five hundred twenty-three".