2091706451 has 2 divisors, whose sum is σ = 2091706452. Its totient is φ = 2091706450.

The previous prime is 2091706439. The next prime is 2091706453. The reversal of 2091706451 is 1546071902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2091706451 - 2²⁶ = 2024597587 is a prime.

It is a Sophie Germain prime.

Together with 2091706453, 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 (2091706453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045853225 + 1045853226.

It is an arithmetic number, because the mean of its divisors is an integer number (1045853226).

Almost surely, 2^2091706451 is an apocalyptic number.

2091706451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091706451 is an equidigital number, since it uses as much as digits as its factorization.

2091706451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 2091706451 is about 45735.1773911505. The cubic root of 2091706451 is about 1278.8911398950.

The spelling of 2091706451 in words is "two billion, ninety-one million, seven hundred six thousand, four hundred fifty-one".