194404344749 has 4 divisors (see below), whose sum is σ = 194531991936. Its totient is φ = 194276697564.

The previous prime is 194404344727. The next prime is 194404344751. The reversal of 194404344749 is 947443404491.

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 a cyclic number.

It is not a de Polignac number, because 194404344749 - 2⁸ = 194404344493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194404344749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194404346749) 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, 63821309 + ... + 63824354.

It is an arithmetic number, because the mean of its divisors is an integer number (48632997984).

Almost surely, 2^194404344749 is an apocalyptic number.

It is an amenable number.

194404344749 is a deficient number, since it is larger than the sum of its proper divisors (127647187).

194404344749 is a wasteful number, since it uses less digits than its factorization.

194404344749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127647186.

The product of its (nonzero) digits is 6967296, while the sum is 53.

The spelling of 194404344749 in words is "one hundred ninety-four billion, four hundred four million, three hundred forty-four thousand, seven hundred forty-nine".