188206940266 has 8 divisors (see below), whose sum is σ = 282501036324. Its totient is φ = 94039928160.

The previous prime is 188206940249. The next prime is 188206940267. The reversal of 188206940266 is 662049602881.

It can be written as a sum of positive squares in 2 ways, for example, as 177725480625 + 10481459641 = 421575^2 + 102379^2 .

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

It is not an unprimeable number, because it can be changed into a prime (188206940267) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31767285 + ... + 31773208.

Almost surely, 2^188206940266 is an apocalyptic number.

188206940266 is a deficient number, since it is larger than the sum of its proper divisors (94294096058).

188206940266 is a wasteful number, since it uses less digits than its factorization.

188206940266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63541976.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 188206940266 in words is "one hundred eighty-eight billion, two hundred six million, nine hundred forty thousand, two hundred sixty-six".