186972230196 has 18 divisors (see below), whose sum is σ = 472624248642. Its totient is φ = 62324076720.

The previous prime is 186972230191. The next prime is 186972230197. The reversal of 186972230196 is 691032279681.

186972230196 is a `hidden beast` number, since 186 + 9 + 72 + 2 + 301 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 160496384400 + 26475845796 = 400620^2 + 162714^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×186972230196² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186972230191) 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 in 5 ways as a sum of consecutive naturals, for example, 2596836495 + ... + 2596836566.

Almost surely, 2^186972230196 is an apocalyptic number.

It is an amenable number.

186972230196 is an abundant number, since it is smaller than the sum of its proper divisors (285652018446).

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

186972230196 is a wasteful number, since it uses less digits than its factorization.

186972230196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5193673071 (or 5193673066 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 186972230196 in words is "one hundred eighty-six billion, nine hundred seventy-two million, two hundred thirty thousand, one hundred ninety-six".