194131269601 has 4 divisors (see below), whose sum is σ = 194199126804. Its totient is φ = 194063412400.

The previous prime is 194131269593. The next prime is 194131269613. The reversal of 194131269601 is 106962131491.

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 158205858001 + 35925411600 = 397751^2 + 189540^2 .

It is a cyclic number.

It is not a de Polignac number, because 194131269601 - 2³ = 194131269593 is a prime.

It is a super-2 number, since 2×194131269601² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194131269671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33924310 + ... + 33930031.

It is an arithmetic number, because the mean of its divisors is an integer number (48549781701).

Almost surely, 2^194131269601 is an apocalyptic number.

It is an amenable number.

194131269601 is a deficient number, since it is larger than the sum of its proper divisors (67857203).

194131269601 is an equidigital number, since it uses as much as digits as its factorization.

194131269601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67857202.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 194131269601 in words is "one hundred ninety-four billion, one hundred thirty-one million, two hundred sixty-nine thousand, six hundred one".