191748136734 has 64 divisors (see below), whose sum is σ = 531250260480. Its totient is φ = 49804709760.

The previous prime is 191748136733. The next prime is 191748136759. The reversal of 191748136734 is 437631847191.

191748136734 is a `hidden beast` number, since 1 + 9 + 174 + 81 + 367 + 34 = 666.

191748136734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191748136733) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 23053579 + ... + 23061894.

It is an arithmetic number, because the mean of its divisors is an integer number (8300785320).

Almost surely, 2^191748136734 is an apocalyptic number.

191748136734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

191748136734 is an abundant number, since it is smaller than the sum of its proper divisors (339502123746).

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

191748136734 is a wasteful number, since it uses less digits than its factorization.

191748136734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46115502 (or 46115496 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 191748136734 in words is "one hundred ninety-one billion, seven hundred forty-eight million, one hundred thirty-six thousand, seven hundred thirty-four".