186249212356 has 81 divisors (see below), whose sum is σ = 353865723687. Its totient is φ = 85760795520.

The previous prime is 186249212351. The next prime is 186249212377. The reversal of 186249212356 is 653212942681.

The square root of 186249212356 is 431566.

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

186249212356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 118136564100 + 68112648256 = 343710^2 + 260984^2 .

It is not an unprimeable number, because it can be changed into a prime (186249212351) 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 26 ways as a sum of consecutive naturals, for example, 672379690 + ... + 672379966.

Almost surely, 2^186249212356 is an apocalyptic number.

186249212356 is the 431566-th square number.

It is an amenable number.

186249212356 is a deficient number, since it is larger than the sum of its proper divisors (167616511331).

186249212356 is an equidigital number, since it uses as much as digits as its factorization.

186249212356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 339 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

Multiplying 186249212356 by its sum of digits (49), we get a square (9126211405444 = 3020962²).

The spelling of 186249212356 in words is "one hundred eighty-six billion, two hundred forty-nine million, two hundred twelve thousand, three hundred fifty-six".