185200430213 has 4 divisors (see below), whose sum is σ = 185225971788. Its totient is φ = 185174888640.

The previous prime is 185200430209. The next prime is 185200430231. The reversal of 185200430213 is 312034002581.

It is a happy number.

185200430213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148466107969 + 36734322244 = 385313^2 + 191662^2 .

It is a cyclic number.

It is not a de Polignac number, because 185200430213 - 2² = 185200430209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185200430203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12759908 + ... + 12774413.

It is an arithmetic number, because the mean of its divisors is an integer number (46306492947).

Almost surely, 2^185200430213 is an apocalyptic number.

It is an amenable number.

185200430213 is a deficient number, since it is larger than the sum of its proper divisors (25541575).

185200430213 is an equidigital number, since it uses as much as digits as its factorization.

185200430213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25541574.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 185200430213 its reverse (312034002581), we get a palindrome (497234432794).

The spelling of 185200430213 in words is "one hundred eighty-five billion, two hundred million, four hundred thirty thousand, two hundred thirteen".