194385759645 has 128 divisors (see below), whose sum is σ = 408514129920. Its totient is φ = 76467456000.

The previous prime is 194385759629. The next prime is 194385759653. The reversal of 194385759645 is 546957583491.

194385759645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 194385759645 - 2⁴ = 194385759629 is a prime.

It is a congruent number.

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 127 ways as a sum of consecutive naturals, for example, 32497555 + ... + 32503535.

It is an arithmetic number, because the mean of its divisors is an integer number (3191516640).

Almost surely, 2^194385759645 is an apocalyptic number.

194385759645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194385759645 is an abundant number, since it is smaller than the sum of its proper divisors (214128370275).

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

194385759645 is a wasteful number, since it uses less digits than its factorization.

194385759645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507.

The product of its digits is 163296000, while the sum is 66.

The spelling of 194385759645 in words is "one hundred ninety-four billion, three hundred eighty-five million, seven hundred fifty-nine thousand, six hundred forty-five".