191316764 has 6 divisors (see below), whose sum is σ = 334804344. Its totient is φ = 95658380.

The previous prime is 191316739. The next prime is 191316767. The reversal of 191316764 is 467613191.

It is a happy number.

191316764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191316767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23914592 + ... + 23914599.

It is an arithmetic number, because the mean of its divisors is an integer number (55800724).

Almost surely, 2^191316764 is an apocalyptic number.

It is an amenable number.

191316764 is a deficient number, since it is larger than the sum of its proper divisors (143487580).

191316764 is a wasteful number, since it uses less digits than its factorization.

191316764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47829195 (or 47829193 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 191316764 is about 13831.7303328253. The cubic root of 191316764 is about 576.2147114595.

The spelling of 191316764 in words is "one hundred ninety-one million, three hundred sixteen thousand, seven hundred sixty-four".