185185349 has 2 divisors, whose sum is σ = 185185350. Its totient is φ = 185185348.

The previous prime is 185185331. The next prime is 185185379. The reversal of 185185349 is 943581581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148401124 + 36784225 = 12182^2 + 6065^2 .

It is an emirp because it is prime and its reverse (943581581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 185185349 - 2⁸ = 185185093 is a prime.

It is a super-2 number, since 2×185185349² = 68587226968503602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185185309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92592674 + 92592675.

It is an arithmetic number, because the mean of its divisors is an integer number (92592675).

Almost surely, 2^185185349 is an apocalyptic number.

It is an amenable number.

185185349 is a deficient number, since it is larger than the sum of its proper divisors (1).

185185349 is an equidigital number, since it uses as much as digits as its factorization.

185185349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 44.

The square root of 185185349 is about 13608.2823677347. The cubic root of 185185349 is about 569.9921502972.

The spelling of 185185349 in words is "one hundred eighty-five million, one hundred eighty-five thousand, three hundred forty-nine".