1999995707 has 2 divisors, whose sum is σ = 1999995708. Its totient is φ = 1999995706.

The previous prime is 1999995671. The next prime is 1999995713. The reversal of 1999995707 is 7075999991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1999995707 - 2¹⁴ = 1999979323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1999995607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999997853 + 999997854.

It is an arithmetic number, because the mean of its divisors is an integer number (999997854).

Almost surely, 2^1999995707 is an apocalyptic number.

1999995707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999995707 is an equidigital number, since it uses as much as digits as its factorization.

1999995707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14467005, while the sum is 65.

The square root of 1999995707 is about 44721.3115527709. The cubic root of 1999995707 is about 1259.9201484207.

The spelling of 1999995707 in words is "one billion, nine hundred ninety-nine million, nine hundred ninety-five thousand, seven hundred seven".