194343217273 has 8 divisors (see below), whose sum is σ = 195122808648. Its totient is φ = 193563807744.

The previous prime is 194343217223. The next prime is 194343217291. The reversal of 194343217273 is 372712343491.

It can be written as a sum of positive squares in 4 ways, for example, as 82859349609 + 111483867664 = 287853^2 + 333892^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194343217273 is a prime.

It is a super-2 number, since 2×194343217273² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194343217223) 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, 2347615 + ... + 2428987.

It is an arithmetic number, because the mean of its divisors is an integer number (24390351081).

Almost surely, 2^194343217273 is an apocalyptic number.

It is an amenable number.

194343217273 is a deficient number, since it is larger than the sum of its proper divisors (779591375).

194343217273 is an equidigital number, since it uses as much as digits as its factorization.

194343217273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90923.

The product of its digits is 762048, while the sum is 46.

The spelling of 194343217273 in words is "one hundred ninety-four billion, three hundred forty-three million, two hundred seventeen thousand, two hundred seventy-three".