191668941 has 12 divisors (see below), whose sum is σ = 291426720. Its totient is φ = 121053960.

The previous prime is 191668927. The next prime is 191668943. The reversal of 191668941 is 149866191.

It is not a de Polignac number, because 191668941 - 2⁵ = 191668909 is a prime.

It is a super-2 number, since 2×191668941² = 73473965888122962, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191668943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 560265 + ... + 560606.

It is an arithmetic number, because the mean of its divisors is an integer number (24285560).

Almost surely, 2^191668941 is an apocalyptic number.

It is an amenable number.

191668941 is a deficient number, since it is larger than the sum of its proper divisors (99757779).

191668941 is a wasteful number, since it uses less digits than its factorization.

191668941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120896 (or 1120893 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 191668941 is about 13844.4552438874. The cubic root of 191668941 is about 576.5680611842.

The spelling of 191668941 in words is "one hundred ninety-one million, six hundred sixty-eight thousand, nine hundred forty-one".