191384093 has 16 divisors (see below), whose sum is σ = 206040000. Its totient is φ = 177230592.

The previous prime is 191384077. The next prime is 191384119. The reversal of 191384093 is 390483191.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 191384093 - 2⁴ = 191384077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191384393) 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 15 ways as a sum of consecutive naturals, for example, 189173 + ... + 190181.

It is an arithmetic number, because the mean of its divisors is an integer number (12877500).

Almost surely, 2^191384093 is an apocalyptic number.

It is an amenable number.

191384093 is a deficient number, since it is larger than the sum of its proper divisors (14655907).

191384093 is a wasteful number, since it uses less digits than its factorization.

191384093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 191384093 is about 13834.1639790773. The cubic root of 191384093 is about 576.2822981663.

The spelling of 191384093 in words is "one hundred ninety-one million, three hundred eighty-four thousand, ninety-three".