3183894216409 has 9 divisors (see below), whose sum is σ = 3360323029023. Its totient is φ = 3016288718352.

The previous prime is 3183894216389. The next prime is 3183894216421. The reversal of 3183894216409 is 9046124983813.

The square root of 3183894216409 is 1784347.

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

It can be written as a sum of positive squares in only one way, i.e., 2119018819225 + 1064875397184 = 1455685^2 + 1031928^2 .

It is not a de Polignac number, because 3183894216409 - 2⁹ = 3183894215897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3183894216449) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33855637 + ... + 33949549.

It is an arithmetic number, because the mean of its divisors is an integer number (373369225447).

Almost surely, 2^{3183894216409} is an apocalyptic number.

3183894216409 is the 1784347-th square number.

3183894216409 is the 892174-th centered octagonal number.

It is an amenable number.

3183894216409 is a deficient number, since it is larger than the sum of its proper divisors (176428812614).

3183894216409 is an frugal number, since it uses more digits than its factorization.

3183894216409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187864 (or 93932 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 3183894216409 in words is "three trillion, one hundred eighty-three billion, eight hundred ninety-four million, two hundred sixteen thousand, four hundred nine".