199954633 has 2 divisors, whose sum is σ = 199954634. Its totient is φ = 199954632.

The previous prime is 199954631. The next prime is 199954661. The reversal of 199954633 is 336459991.

199954633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197037369 + 2917264 = 14037^2 + 1708^2 .

It is a cyclic number.

It is not a de Polignac number, because 199954633 - 2¹ = 199954631 is a prime.

Together with 199954631, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (199954631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99977316 + 99977317.

It is an arithmetic number, because the mean of its divisors is an integer number (99977317).

Almost surely, 2^199954633 is an apocalyptic number.

It is an amenable number.

199954633 is a deficient number, since it is larger than the sum of its proper divisors (1).

199954633 is an equidigital number, since it uses as much as digits as its factorization.

199954633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 49.

The square root of 199954633 is about 14140.5315670946. The cubic root of 199954633 is about 584.7593263278.

The spelling of 199954633 in words is "one hundred ninety-nine million, nine hundred fifty-four thousand, six hundred thirty-three".