191054341812 has 48 divisors (see below), whose sum is σ = 455337050112. Its totient is φ = 62321760480.

The previous prime is 191054341771. The next prime is 191054341817. The reversal of 191054341812 is 218143450191.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191054341817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5685853 + ... + 5719355.

It is an arithmetic number, because the mean of its divisors is an integer number (9486188544).

Almost surely, 2^191054341812 is an apocalyptic number.

191054341812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191054341812 is an abundant number, since it is smaller than the sum of its proper divisors (264282708300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191054341812 is a wasteful number, since it uses less digits than its factorization.

191054341812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43668 (or 43666 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 191054341812 in words is "one hundred ninety-one billion, fifty-four million, three hundred forty-one thousand, eight hundred twelve".