186851666852 has 6 divisors (see below), whose sum is σ = 326990416998. Its totient is φ = 93425833424.

The previous prime is 186851666851. The next prime is 186851666861. The reversal of 186851666852 is 258666158681.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 109259335936 + 77592330916 = 330544^2 + 278554^2 .

It is not an unprimeable number, because it can be changed into a prime (186851666851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23356458353 + ... + 23356458360.

It is an arithmetic number, because the mean of its divisors is an integer number (54498402833).

Almost surely, 2^186851666852 is an apocalyptic number.

It is an amenable number.

186851666852 is a deficient number, since it is larger than the sum of its proper divisors (140138750146).

186851666852 is a wasteful number, since it uses less digits than its factorization.

186851666852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46712916717 (or 46712916715 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 62.

The spelling of 186851666852 in words is "one hundred eighty-six billion, eight hundred fifty-one million, six hundred sixty-six thousand, eight hundred fifty-two".