191668682 has 4 divisors (see below), whose sum is σ = 287503026. Its totient is φ = 95834340.

The previous prime is 191668681. The next prime is 191668699. The reversal of 191668682 is 286866191.

191668682 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 190964761 + 703921 = 13819^2 + 839^2 .

It is not an unprimeable number, because it can be changed into a prime (191668681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47917169 + ... + 47917172.

Almost surely, 2^191668682 is an apocalyptic number.

191668682 is a deficient number, since it is larger than the sum of its proper divisors (95834344).

191668682 is an equidigital number, since it uses as much as digits as its factorization.

191668682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95834343.

The product of its digits is 248832, while the sum is 47.

The square root of 191668682 is about 13844.4458899589. The cubic root of 191668682 is about 576.5678014808.

The spelling of 191668682 in words is "one hundred ninety-one million, six hundred sixty-eight thousand, six hundred eighty-two".