194169435085 has 4 divisors (see below), whose sum is σ = 233003322108. Its totient is φ = 155335548064.

The previous prime is 194169435077. The next prime is 194169435179. The reversal of 194169435085 is 580534961491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130444491241 + 63724943844 = 361171^2 + 252438^2 .

It is a cyclic number.

It is not a de Polignac number, because 194169435085 - 2³ = 194169435077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19416943504 + ... + 19416943513.

It is an arithmetic number, because the mean of its divisors is an integer number (58250830527).

Almost surely, 2^194169435085 is an apocalyptic number.

It is an amenable number.

194169435085 is a deficient number, since it is larger than the sum of its proper divisors (38833887023).

194169435085 is an equidigital number, since it uses as much as digits as its factorization.

194169435085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38833887022.

The product of its (nonzero) digits is 4665600, while the sum is 55.

It can be divided in two parts, 19416943 and 5085, that added together give a triangular number (19422028 = T₆₂₃₂).

The spelling of 194169435085 in words is "one hundred ninety-four billion, one hundred sixty-nine million, four hundred thirty-five thousand, eighty-five".