199674653 has 2 divisors, whose sum is σ = 199674654. Its totient is φ = 199674652.

The previous prime is 199674617. The next prime is 199674731. The reversal of 199674653 is 356476991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158432569 + 41242084 = 12587^2 + 6422^2 .

It is a cyclic number.

It is not a de Polignac number, because 199674653 - 2¹⁴ = 199658269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199674613) 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 as a sum of consecutive naturals, namely, 99837326 + 99837327.

It is an arithmetic number, because the mean of its divisors is an integer number (99837327).

Almost surely, 2^199674653 is an apocalyptic number.

It is an amenable number.

199674653 is a deficient number, since it is larger than the sum of its proper divisors (1).

199674653 is an equidigital number, since it uses as much as digits as its factorization.

199674653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 50.

The square root of 199674653 is about 14130.6281884423. The cubic root of 199674653 is about 584.4862687377.

The spelling of 199674653 in words is "one hundred ninety-nine million, six hundred seventy-four thousand, six hundred fifty-three".