191748423 has 16 divisors (see below), whose sum is σ = 279438336. Its totient is φ = 116430720.

The previous prime is 191748397. The next prime is 191748433. The reversal of 191748423 is 324847191.

It is not a de Polignac number, because 191748423 - 2¹⁰ = 191747399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191748433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59061 + ... + 62222.

It is an arithmetic number, because the mean of its divisors is an integer number (17464896).

Almost surely, 2^191748423 is an apocalyptic number.

191748423 is a deficient number, since it is larger than the sum of its proper divisors (87689913).

191748423 is a wasteful number, since it uses less digits than its factorization.

191748423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121334.

The product of its digits is 48384, while the sum is 39.

The square root of 191748423 is about 13847.3254818394. The cubic root of 191748423 is about 576.6477479769.

The spelling of 191748423 in words is "one hundred ninety-one million, seven hundred forty-eight thousand, four hundred twenty-three".