194236547249 has 4 divisors (see below), whose sum is σ = 204459523440. Its totient is φ = 184013571060.

The previous prime is 194236547213. The next prime is 194236547293. The reversal of 194236547249 is 942745632491.

It is a happy number.

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 194236547249 - 2⁸ = 194236546993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 194236547194 and 194236547203.

It is not an unprimeable number, because it can be changed into a prime (194236547299) 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, 5111488067 + ... + 5111488104.

It is an arithmetic number, because the mean of its divisors is an integer number (51114880860).

Almost surely, 2^194236547249 is an apocalyptic number.

194236547249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

194236547249 is a deficient number, since it is larger than the sum of its proper divisors (10222976191).

194236547249 is a wasteful number, since it uses less digits than its factorization.

194236547249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10222976190.

The product of its digits is 13063680, while the sum is 56.

The spelling of 194236547249 in words is "one hundred ninety-four billion, two hundred thirty-six million, five hundred forty-seven thousand, two hundred forty-nine".