186213316 has 9 divisors (see below), whose sum is σ = 325921071. Its totient is φ = 93093012.

The previous prime is 186213289. The next prime is 186213329. The reversal of 186213316 is 613312681.

The square root of 186213316 is 13646.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23881 + ... + 30703.

Almost surely, 2^186213316 is an apocalyptic number.

186213316 is the 13646-th square number.

It is an amenable number.

186213316 is a deficient number, since it is larger than the sum of its proper divisors (139707755).

186213316 is an frugal number, since it uses more digits than its factorization.

186213316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13650 (or 6825 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The cubic root of 186213316 is about 571.0448834646.

Multiplying 186213316 by its product of digits (5184), we get a square (965329830144 = 982512²).

Adding to 186213316 its reverse (613312681), we get a palindrome (799525997).

The spelling of 186213316 in words is "one hundred eighty-six million, two hundred thirteen thousand, three hundred sixteen".