131668460186 has 4 divisors (see below), whose sum is σ = 197502690282. Its totient is φ = 65834230092.

The previous prime is 131668460177. The next prime is 131668460239. The reversal of 131668460186 is 681064866131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 115148242225 + 16520217961 = 339335^2 + 128531^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32917115045 + ... + 32917115048.

Almost surely, 2^131668460186 is an apocalyptic number.

131668460186 is a deficient number, since it is larger than the sum of its proper divisors (65834230096).

131668460186 is an equidigital number, since it uses as much as digits as its factorization.

131668460186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65834230095.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 131668460186 in words is "one hundred thirty-one billion, six hundred sixty-eight million, four hundred sixty thousand, one hundred eighty-six".