163538223187 has 8 divisors (see below), whose sum is σ = 163970030000. Its totient is φ = 163106517024.

The previous prime is 163538223133. The next prime is 163538223221. The reversal of 163538223187 is 781322835361.

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 163538223187 - 2¹⁵ = 163538190419 is a prime.

It is a super-2 number, since 2×163538223187² (a number of 23 digits) contains 22 as substring.

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 163538223187.

It is not an unprimeable number, because it can be changed into a prime (163538223787) 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, 4120564 + ... + 4160062.

It is an arithmetic number, because the mean of its divisors is an integer number (20496253750).

Almost surely, 2^163538223187 is an apocalyptic number.

163538223187 is a deficient number, since it is larger than the sum of its proper divisors (431806813).

163538223187 is a wasteful number, since it uses less digits than its factorization.

163538223187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50325.

The product of its digits is 1451520, while the sum is 49.

The spelling of 163538223187 in words is "one hundred sixty-three billion, five hundred thirty-eight million, two hundred twenty-three thousand, one hundred eighty-seven".