191041768 has 8 divisors (see below), whose sum is σ = 358203330. Its totient is φ = 95520880.

The previous prime is 191041757. The next prime is 191041769. The reversal of 191041768 is 867140191.

It can be written as a sum of positive squares in only one way, i.e., 98843364 + 92198404 = 9942^2 + 9602^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (191041769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11940103 + ... + 11940118.

Almost surely, 2^191041768 is an apocalyptic number.

It is an amenable number.

191041768 is a deficient number, since it is larger than the sum of its proper divisors (167161562).

191041768 is a wasteful number, since it uses less digits than its factorization.

191041768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23880227 (or 23880223 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 191041768 is about 13821.7859916872. The cubic root of 191041768 is about 575.9384981274.

The spelling of 191041768 in words is "one hundred ninety-one million, forty-one thousand, seven hundred sixty-eight".