191969368 has 16 divisors (see below), whose sum is σ = 364500000. Its totient is φ = 94769376.

The previous prime is 191969333. The next prime is 191969411. The reversal of 191969368 is 863969191.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151243 + ... + 152506.

It is an arithmetic number, because the mean of its divisors is an integer number (22781250).

Almost surely, 2^191969368 is an apocalyptic number.

It is an amenable number.

191969368 is a deficient number, since it is larger than the sum of its proper divisors (172530632).

191969368 is a wasteful number, since it uses less digits than its factorization.

191969368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303834 (or 303830 counting only the distinct ones).

The product of its digits is 629856, while the sum is 52.

The square root of 191969368 is about 13855.3010793703. The cubic root of 191969368 is about 576.8691466379.

The spelling of 191969368 in words is "one hundred ninety-one million, nine hundred sixty-nine thousand, three hundred sixty-eight".