194868473 has 2 divisors, whose sum is σ = 194868474. Its totient is φ = 194868472.

The previous prime is 194868403. The next prime is 194868493. The reversal of 194868473 is 374868491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173264569 + 21603904 = 13163^2 + 4648^2 .

It is an emirp because it is prime and its reverse (374868491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194868473 - 2¹⁴ = 194852089 is a prime.

It is not a weakly prime, because it can be changed into another prime (194868403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97434236 + 97434237.

It is an arithmetic number, because the mean of its divisors is an integer number (97434237).

Almost surely, 2^194868473 is an apocalyptic number.

It is an amenable number.

194868473 is a deficient number, since it is larger than the sum of its proper divisors (1).

194868473 is an equidigital number, since it uses as much as digits as its factorization.

194868473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 50.

The square root of 194868473 is about 13959.5298273258. The cubic root of 194868473 is about 579.7585925596.

The spelling of 194868473 in words is "one hundred ninety-four million, eight hundred sixty-eight thousand, four hundred seventy-three".