16198563 has 8 divisors (see below), whose sum is σ = 22181968. Its totient is φ = 10507104.

The previous prime is 16198561. The next prime is 16198571. The reversal of 16198563 is 36589161.

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

It is not a de Polignac number, because 16198563 - 2¹ = 16198561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16198561) 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, 72856 + ... + 73077.

It is an arithmetic number, because the mean of its divisors is an integer number (2772746).

Almost surely, 2^16198563 is an apocalyptic number.

16198563 is a deficient number, since it is larger than the sum of its proper divisors (5983405).

16198563 is a wasteful number, since it uses less digits than its factorization.

16198563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145973.

The product of its digits is 38880, while the sum is 39.

The square root of 16198563 is about 4024.7438427806. The cubic root of 16198563 is about 253.0223178092.

It can be divided in two parts, 16198 and 563, that added together give a palindrome (16761).

The spelling of 16198563 in words is "sixteen million, one hundred ninety-eight thousand, five hundred sixty-three".