16306336309 has 4 divisors (see below), whose sum is σ = 16310156716. Its totient is φ = 16302515904.

The previous prime is 16306336307. The next prime is 16306336373. The reversal of 16306336309 is 90363360361.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6633613809 + 9672722500 = 81447^2 + 98350^2 .

It is a cyclic number.

It is not a de Polignac number, because 16306336309 - 2¹ = 16306336307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16306336307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1903794 + ... + 1912339.

It is an arithmetic number, because the mean of its divisors is an integer number (4077539179).

Almost surely, 2^16306336309 is an apocalyptic number.

It is an amenable number.

16306336309 is a deficient number, since it is larger than the sum of its proper divisors (3820407).

16306336309 is an equidigital number, since it uses as much as digits as its factorization.

16306336309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820406.

The product of its (nonzero) digits is 157464, while the sum is 40.

The spelling of 16306336309 in words is "sixteen billion, three hundred six million, three hundred thirty-six thousand, three hundred nine".