1609817913796 has 27 divisors (see below), whose sum is σ = 2887755617383. Its totient is φ = 785226279680.

The previous prime is 1609817913773. The next prime is 1609817913839. The reversal of 1609817913796 is 6973197189061.

The square root of 1609817913796 is 1268786.

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

It can be written as a sum of positive squares in 4 ways, for example, as 576065820100 + 1033752093696 = 758990^2 + 1016736^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 104032716 + ... + 104048188.

Almost surely, 2^{1609817913796} is an apocalyptic number.

1609817913796 is the 1268786-th square number.

It is an amenable number.

1609817913796 is a deficient number, since it is larger than the sum of its proper divisors (1277937703587).

1609817913796 is an frugal number, since it uses more digits than its factorization.

1609817913796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31032 (or 15516 counting only the distinct ones).

The product of its (nonzero) digits is 30862944, while the sum is 67.

The spelling of 1609817913796 in words is "one trillion, six hundred nine billion, eight hundred seventeen million, nine hundred thirteen thousand, seven hundred ninety-six".