194644380715 has 32 divisors (see below), whose sum is σ = 241351646976. Its totient is φ = 150607900800.

The previous prime is 194644380709. The next prime is 194644380731. The reversal of 194644380715 is 517083446491.

194644380715 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 194644380715 - 2⁵ = 194644380683 is a prime.

It is a super-2 number, since 2×194644380715² (a number of 23 digits) contains 22 as substring.

It is a Duffinian 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 31 ways as a sum of consecutive naturals, for example, 9697440 + ... + 9717490.

It is an arithmetic number, because the mean of its divisors is an integer number (7542238968).

Almost surely, 2^194644380715 is an apocalyptic number.

194644380715 is a deficient number, since it is larger than the sum of its proper divisors (46707266261).

194644380715 is a wasteful number, since it uses less digits than its factorization.

194644380715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20539.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 194644380715 in words is "one hundred ninety-four billion, six hundred forty-four million, three hundred eighty thousand, seven hundred fifteen".