191368793 has 24 divisors (see below), whose sum is σ = 242383680. Its totient is φ = 146772000.

The previous prime is 191368787. The next prime is 191368799. The reversal of 191368793 is 397863191.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (191368787) and next prime (191368799).

It is not a de Polignac number, because 191368793 - 2⁶ = 191368729 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191368799) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1267268 + ... + 1267418.

It is an arithmetic number, because the mean of its divisors is an integer number (10099320).

Almost surely, 2^191368793 is an apocalyptic number.

It is an amenable number.

191368793 is a deficient number, since it is larger than the sum of its proper divisors (51014887).

191368793 is a wasteful number, since it uses less digits than its factorization.

191368793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 278 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 191368793 is about 13833.6109891814. The cubic root of 191368793 is about 576.2669409964.

The spelling of 191368793 in words is "one hundred ninety-one million, three hundred sixty-eight thousand, seven hundred ninety-three".