194269252309 has 32 divisors (see below), whose sum is σ = 231534567936. Its totient is φ = 161005240320.

The previous prime is 194269252279. The next prime is 194269252349. The reversal of 194269252309 is 903252962491.

It is a cyclic number.

It is not a de Polignac number, because 194269252309 - 2⁷ = 194269252181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194269252349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738597 + ... + 966469.

It is an arithmetic number, because the mean of its divisors is an integer number (7235455248).

Almost surely, 2^194269252309 is an apocalyptic number.

It is an amenable number.

194269252309 is a deficient number, since it is larger than the sum of its proper divisors (37265315627).

194269252309 is a wasteful number, since it uses less digits than its factorization.

194269252309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228045.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 194269252309 in words is "one hundred ninety-four billion, two hundred sixty-nine million, two hundred fifty-two thousand, three hundred nine".