185940213 has 32 divisors (see below), whose sum is σ = 269913600. Its totient is φ = 113472576.

The previous prime is 185940197. The next prime is 185940217. The reversal of 185940213 is 312049581.

It is not a de Polignac number, because 185940213 - 2⁴ = 185940197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185940217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261903 + ... + 262611.

It is an arithmetic number, because the mean of its divisors is an integer number (8434800).

Almost surely, 2^185940213 is an apocalyptic number.

It is an amenable number.

185940213 is a deficient number, since it is larger than the sum of its proper divisors (83973387).

185940213 is a wasteful number, since it uses less digits than its factorization.

185940213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 185940213 is about 13635.9896230527. The cubic root of 185940213 is about 570.7655794603.

Adding to 185940213 its reverse (312049581), we get a palindrome (497989794).

The spelling of 185940213 in words is "one hundred eighty-five million, nine hundred forty thousand, two hundred thirteen".