199300691 has 2 divisors, whose sum is σ = 199300692. Its totient is φ = 199300690.

The previous prime is 199300627. The next prime is 199300693. The reversal of 199300691 is 196003991.

199300691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199300691 - 2⁶ = 199300627 is a prime.

Together with 199300693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199300693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99650345 + 99650346.

It is an arithmetic number, because the mean of its divisors is an integer number (99650346).

Almost surely, 2^199300691 is an apocalyptic number.

199300691 is a deficient number, since it is larger than the sum of its proper divisors (1).

199300691 is an equidigital number, since it uses as much as digits as its factorization.

199300691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 199300691 is about 14117.3896666487. The cubic root of 199300691 is about 584.1211543771.

It can be divided in two parts, 199300 and 691, that added together give a palindrome (199991).

The spelling of 199300691 in words is "one hundred ninety-nine million, three hundred thousand, six hundred ninety-one".