194922449 has 2 divisors, whose sum is σ = 194922450. Its totient is φ = 194922448.

The previous prime is 194922443. The next prime is 194922509. The reversal of 194922449 is 944229491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129231424 + 65691025 = 11368^2 + 8105^2 .

It is a cyclic number.

It is not a de Polignac number, because 194922449 - 2²⁰ = 193873873 is a prime.

It is a super-2 number, since 2×194922449² = 75989522248315202, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (194922443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97461224 + 97461225.

It is an arithmetic number, because the mean of its divisors is an integer number (97461225).

Almost surely, 2^194922449 is an apocalyptic number.

It is an amenable number.

194922449 is a deficient number, since it is larger than the sum of its proper divisors (1).

194922449 is an equidigital number, since it uses as much as digits as its factorization.

194922449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 194922449 is about 13961.4629964055. The cubic root of 194922449 is about 579.8121161158.

The spelling of 194922449 in words is "one hundred ninety-four million, nine hundred twenty-two thousand, four hundred forty-nine".