194656414609 has 16 divisors (see below), whose sum is σ = 201192589312. Its totient is φ = 188212964688.

The previous prime is 194656414583. The next prime is 194656414613. The reversal of 194656414609 is 906414656491.

194656414609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 194656414609 - 2²⁵ = 194622860177 is a prime.

It is a super-2 number, since 2×194656414609² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194656414609.

It is not an unprimeable number, because it can be changed into a prime (194656414649) 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 15 ways as a sum of consecutive naturals, for example, 14799574 + ... + 14812720.

It is an arithmetic number, because the mean of its divisors is an integer number (12574536832).

Almost surely, 2^194656414609 is an apocalyptic number.

It is an amenable number.

194656414609 is a deficient number, since it is larger than the sum of its proper divisors (6536174703).

194656414609 is a wasteful number, since it uses less digits than its factorization.

194656414609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16636.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 194656414609 in words is "one hundred ninety-four billion, six hundred fifty-six million, four hundred fourteen thousand, six hundred nine".