184993 has 2 divisors, whose sum is σ = 184994. Its totient is φ = 184992.

The previous prime is 184969. The next prime is 184997. The reversal of 184993 is 399481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153664 + 31329 = 392^2 + 177^2 .

It is an emirp because it is prime and its reverse (399481) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-184993 is a prime.

184993 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (184997) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92496 + 92497.

It is an arithmetic number, because the mean of its divisors is an integer number (92497).

2¹⁸⁴⁹⁹³ is an apocalyptic number.

It is an amenable number.

184993 is a deficient number, since it is larger than the sum of its proper divisors (1).

184993 is an equidigital number, since it uses as much as digits as its factorization.

184993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 184993 is about 430.1081259404. The cubic root of 184993 is about 56.9794734749.

The spelling of 184993 in words is "one hundred eighty-four thousand, nine hundred ninety-three".