16732198609 has 27 divisors (see below), whose sum is σ = 20695314843. Its totient is φ = 13485826368.

The previous prime is 16732198607. The next prime is 16732198649. The reversal of 16732198609 is 90689123761.

It is a happy number.

The square root of 16732198609 is 129353.

It is a perfect power (a square), and thus also a powerful number.

16732198609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13026798225 + 3705400384 = 114135^2 + 60872^2 .

It is not a de Polignac number, because 16732198609 - 2¹ = 16732198607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16732198607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15392464 + ... + 15393550.

Almost surely, 2^16732198609 is an apocalyptic number.

16732198609 is the 129353-rd square number.

16732198609 is the 64677-th centered octagonal number.

It is an amenable number.

16732198609 is a deficient number, since it is larger than the sum of its proper divisors (3963116234).

16732198609 is an frugal number, since it uses more digits than its factorization.

16732198609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 16732198609 in words is "sixteen billion, seven hundred thirty-two million, one hundred ninety-eight thousand, six hundred nine".