194419216249 has 16 divisors (see below), whose sum is σ = 200626064128. Its totient is φ = 188334761472.

The previous prime is 194419216241. The next prime is 194419216261. The reversal of 194419216249 is 942612914491.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 194419216249 - 2³ = 194419216241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 194419216196 and 194419216205.

It is not an unprimeable number, because it can be changed into a prime (194419216241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925072 + ... + 1115614.

It is an arithmetic number, because the mean of its divisors is an integer number (12539129008).

Almost surely, 2^194419216249 is an apocalyptic number.

It is an amenable number.

194419216249 is a deficient number, since it is larger than the sum of its proper divisors (6206847879).

194419216249 is a wasteful number, since it uses less digits than its factorization.

194419216249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190864.

The product of its digits is 1119744, while the sum is 52.

The spelling of 194419216249 in words is "one hundred ninety-four billion, four hundred nineteen million, two hundred sixteen thousand, two hundred forty-nine".