673185789441 has 135 divisors (see below), whose sum is σ = 1141676296033. Its totient is φ = 381949384080.

The previous prime is 673185789433. The next prime is 673185789443. The reversal of 673185789441 is 144987581376.

The square root of 673185789441 is 820479.

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

673185789441 is a `hidden beast` number, since 6 + 7 + 3 + 18 + 578 + 9 + 4 + 41 = 666.

It is not a de Polignac number, because 673185789441 - 2³ = 673185789433 is a prime.

It is a Duffinian number.

Its product of digits (40642560) is a multiple of the sum of its prime divisors (84).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (673185789443) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 14323101880 + ... + 14323101926.

Almost surely, 2^673185789441 is an apocalyptic number.

673185789441 is the 820479-th square number.

673185789441 is the 410240-th centered octagonal number.

It is an amenable number.

673185789441 is a deficient number, since it is larger than the sum of its proper divisors (468490506592).

673185789441 is an frugal number, since it uses more digits than its factorization.

673185789441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 84 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 673185789441 in words is "six hundred seventy-three billion, one hundred eighty-five million, seven hundred eighty-nine thousand, four hundred forty-one".