185540214 has 8 divisors (see below), whose sum is σ = 371080440. Its totient is φ = 61846736.

The previous prime is 185540213. The next prime is 185540233. The reversal of 185540214 is 412045581.

185540214 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

185540214 is an admirable number.

It is a super-2 number, since 2×185540214² = 68850342022331592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185540213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15461679 + ... + 15461690.

It is an arithmetic number, because the mean of its divisors is an integer number (46385055).

Almost surely, 2^185540214 is an apocalyptic number.

185540214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

185540214 is a wasteful number, since it uses less digits than its factorization.

185540214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30923374.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 185540214 is about 13621.3146942577. The cubic root of 185540214 is about 570.3560041359.

Adding to 185540214 its reverse (412045581), we get a palindrome (597585795).

The spelling of 185540214 in words is "one hundred eighty-five million, five hundred forty thousand, two hundred fourteen".