194002612909 has 4 divisors (see below), whose sum is σ = 221717271904. Its totient is φ = 166287953916.

The previous prime is 194002612907. The next prime is 194002612933. The reversal of 194002612909 is 909216200491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 194002612909 - 2¹ = 194002612907 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 (194002612907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13857329487 + ... + 13857329500.

It is an arithmetic number, because the mean of its divisors is an integer number (55429317976).

Almost surely, 2^194002612909 is an apocalyptic number.

It is an amenable number.

194002612909 is a deficient number, since it is larger than the sum of its proper divisors (27714658995).

194002612909 is an equidigital number, since it uses as much as digits as its factorization.

194002612909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27714658994.

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

The spelling of 194002612909 in words is "one hundred ninety-four billion, two million, six hundred twelve thousand, nine hundred nine".