194044913 has 2 divisors, whose sum is σ = 194044914. Its totient is φ = 194044912.

The previous prime is 194044897. The next prime is 194044957. The reversal of 194044913 is 319440491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193571569 + 473344 = 13913^2 + 688^2 .

It is a cyclic number.

It is not a de Polignac number, because 194044913 - 2⁴ = 194044897 is a prime.

It is a super-2 number, since 2×194044913² = 75306856522355138, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194044993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97022456 + 97022457.

It is an arithmetic number, because the mean of its divisors is an integer number (97022457).

Almost surely, 2^194044913 is an apocalyptic number.

It is an amenable number.

194044913 is a deficient number, since it is larger than the sum of its proper divisors (1).

194044913 is an equidigital number, since it uses as much as digits as its factorization.

194044913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 194044913 is about 13930.0004666188. Note that the first 3 decimals coincide. The cubic root of 194044913 is about 578.9407072261.

The spelling of 194044913 in words is "one hundred ninety-four million, forty-four thousand, nine hundred thirteen".