191492689234 has 48 divisors (see below), whose sum is σ = 366024121056. Its totient is φ = 74297865600.

The previous prime is 191492689217. The next prime is 191492689261. The reversal of 191492689234 is 432986294191.

191492689234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108744 + ... + 628339.

It is an arithmetic number, because the mean of its divisors is an integer number (7625502522).

Almost surely, 2^191492689234 is an apocalyptic number.

191492689234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

191492689234 is a deficient number, since it is larger than the sum of its proper divisors (174531431822).

191492689234 is a wasteful number, since it uses less digits than its factorization.

191492689234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737351 (or 737344 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 58.

The spelling of 191492689234 in words is "one hundred ninety-one billion, four hundred ninety-two million, six hundred eighty-nine thousand, two hundred thirty-four".