16545198238 has 16 divisors (see below), whose sum is σ = 25484712624. Its totient is φ = 8053090560.

The previous prime is 16545198227. The next prime is 16545198239. The reversal of 16545198238 is 83289154561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545198239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687220 + ... + 710887.

It is an arithmetic number, because the mean of its divisors is an integer number (1592794539).

Almost surely, 2^16545198238 is an apocalyptic number.

16545198238 is a deficient number, since it is larger than the sum of its proper divisors (8939514386).

16545198238 is a wasteful number, since it uses less digits than its factorization.

16545198238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398267.

The product of its digits is 2073600, while the sum is 52.

The spelling of 16545198238 in words is "sixteen billion, five hundred forty-five million, one hundred ninety-eight thousand, two hundred thirty-eight".