199193653 has 2 divisors, whose sum is σ = 199193654. Its totient is φ = 199193652.

The previous prime is 199193651. The next prime is 199193669. The reversal of 199193653 is 356391991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171557604 + 27636049 = 13098^2 + 5257^2 .

It is a cyclic number.

It is not a de Polignac number, because 199193653 - 2¹ = 199193651 is a prime.

It is a super-2 number, since 2×199193653² = 79356222790968818, which contains 22 as substring.

Together with 199193651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199193651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99596826 + 99596827.

It is an arithmetic number, because the mean of its divisors is an integer number (99596827).

Almost surely, 2^199193653 is an apocalyptic number.

It is an amenable number.

199193653 is a deficient number, since it is larger than the sum of its proper divisors (1).

199193653 is an equidigital number, since it uses as much as digits as its factorization.

199193653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 196830, while the sum is 46.

The square root of 199193653 is about 14113.5981592222. The cubic root of 199193653 is about 584.0165647472.

The spelling of 199193653 in words is "one hundred ninety-nine million, one hundred ninety-three thousand, six hundred fifty-three".