1609509212013 has 8 divisors (see below), whose sum is σ = 2195919545248. Its totient is φ = 1048052510064.

The previous prime is 1609509212009. The next prime is 1609509212033. The reversal of 1609509212013 is 3102129059061.

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

It is not a de Polignac number, because 1609509212013 - 2² = 1609509212009 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 (1609509212033) 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, 6238407670 + ... + 6238407927.

It is an arithmetic number, because the mean of its divisors is an integer number (274489943156).

Almost surely, 2^{1609509212013} is an apocalyptic number.

It is an amenable number.

1609509212013 is a deficient number, since it is larger than the sum of its proper divisors (586410333235).

1609509212013 is a wasteful number, since it uses less digits than its factorization.

1609509212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476815643.

The product of its (nonzero) digits is 29160, while the sum is 39.

The spelling of 1609509212013 in words is "one trillion, six hundred nine billion, five hundred nine million, two hundred twelve thousand, thirteen".