194188935165 has 16 divisors (see below), whose sum is σ = 312562793088. Its totient is φ = 102947266496.

The previous prime is 194188935139. The next prime is 194188935167. The reversal of 194188935165 is 561539881491.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 194188935165 - 2¹⁰ = 194188934141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194188935099 and 194188935108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194188935167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38757762 + ... + 38762771.

It is an arithmetic number, because the mean of its divisors is an integer number (19535174568).

Almost surely, 2^194188935165 is an apocalyptic number.

194188935165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194188935165 is a deficient number, since it is larger than the sum of its proper divisors (118373857923).

194188935165 is a wasteful number, since it uses less digits than its factorization.

194188935165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77520708.

The product of its digits is 9331200, while the sum is 60.

The spelling of 194188935165 in words is "one hundred ninety-four billion, one hundred eighty-eight million, nine hundred thirty-five thousand, one hundred sixty-five".