199545653 has 2 divisors, whose sum is σ = 199545654. Its totient is φ = 199545652.

The previous prime is 199545649. The next prime is 199545707. The reversal of 199545653 is 356545991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172318129 + 27227524 = 13127^2 + 5218^2 .

It is an emirp because it is prime and its reverse (356545991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199545653 - 2² = 199545649 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 199545598 and 199545607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199545613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99772826 + 99772827.

It is an arithmetic number, because the mean of its divisors is an integer number (99772827).

Almost surely, 2^199545653 is an apocalyptic number.

It is an amenable number.

199545653 is a deficient number, since it is larger than the sum of its proper divisors (1).

199545653 is an equidigital number, since it uses as much as digits as its factorization.

199545653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 729000, while the sum is 47.

The square root of 199545653 is about 14126.0628980619. The cubic root of 199545653 is about 584.3603723182.

The spelling of 199545653 in words is "one hundred ninety-nine million, five hundred forty-five thousand, six hundred fifty-three".