16214579309 has 4 divisors (see below), whose sum is σ = 17067978240. Its totient is φ = 15361180380.

The previous prime is 16214579257. The next prime is 16214579317. The reversal of 16214579309 is 90397541261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90397541261 = 101 ⋅895025161.

It is a cyclic number.

It is not a de Polignac number, because 16214579309 - 2³² = 11919612013 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 (16214579369) 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, 426699437 + ... + 426699474.

It is an arithmetic number, because the mean of its divisors is an integer number (4266994560).

Almost surely, 2^16214579309 is an apocalyptic number.

16214579309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16214579309 is a deficient number, since it is larger than the sum of its proper divisors (853398931).

16214579309 is an equidigital number, since it uses as much as digits as its factorization.

16214579309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853398930.

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 16214579309 in words is "sixteen billion, two hundred fourteen million, five hundred seventy-nine thousand, three hundred nine".