194342751834 has 128 divisors (see below), whose sum is σ = 514782259200. Its totient is φ = 47382900480.

The previous prime is 194342751817. The next prime is 194342751839. The reversal of 194342751834 is 438157243491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (194342751839) 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 63 ways as a sum of consecutive naturals, for example, 855244 + ... + 1058360.

It is an arithmetic number, because the mean of its divisors is an integer number (4021736400).

Almost surely, 2^194342751834 is an apocalyptic number.

194342751834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 194342751834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257391129600).

194342751834 is an abundant number, since it is smaller than the sum of its proper divisors (320439507366).

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

194342751834 is a wasteful number, since it uses less digits than its factorization.

194342751834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203268.

The product of its digits is 2903040, while the sum is 51.

The spelling of 194342751834 in words is "one hundred ninety-four billion, three hundred forty-two million, seven hundred fifty-one thousand, eight hundred thirty-four".