1705916899 has 2 divisors, whose sum is σ = 1705916900. Its totient is φ = 1705916898.

The previous prime is 1705916897. The next prime is 1705916903. The reversal of 1705916899 is 9986195071.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1705916899 - 2¹ = 1705916897 is a prime.

Together with 1705916897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1705916893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852958449 + 852958450.

It is an arithmetic number, because the mean of its divisors is an integer number (852958450).

Almost surely, 2^1705916899 is an apocalyptic number.

1705916899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1705916899 is an equidigital number, since it uses as much as digits as its factorization.

1705916899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 55.

The square root of 1705916899 is about 41302.7468699117. The cubic root of 1705916899 is about 1194.8662394706.

The spelling of 1705916899 in words is "one billion, seven hundred five million, nine hundred sixteen thousand, eight hundred ninety-nine".