16791791 has 2 divisors, whose sum is σ = 16791792. Its totient is φ = 16791790.

The previous prime is 16791773. The next prime is 16791793. The reversal of 16791791 is 19719761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16791791 - 2⁶ = 16791727 is a prime.

Together with 16791793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16791793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8395895 + 8395896.

It is an arithmetic number, because the mean of its divisors is an integer number (8395896).

Almost surely, 2^16791791 is an apocalyptic number.

16791791 is a deficient number, since it is larger than the sum of its proper divisors (1).

16791791 is an equidigital number, since it uses as much as digits as its factorization.

16791791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 41.

The square root of 16791791 is about 4097.7787885634. The cubic root of 16791791 is about 256.0741108267.

The spelling of 16791791 in words is "sixteen million, seven hundred ninety-one thousand, seven hundred ninety-one".