1599945799 has 2 divisors, whose sum is σ = 1599945800. Its totient is φ = 1599945798.

The previous prime is 1599945797. The next prime is 1599945857. The reversal of 1599945799 is 9975499951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1599945799 - 2¹ = 1599945797 is a prime.

Together with 1599945797, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1599945797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 799972899 + 799972900.

It is an arithmetic number, because the mean of its divisors is an integer number (799972900).

Almost surely, 2^1599945799 is an apocalyptic number.

1599945799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1599945799 is an equidigital number, since it uses as much as digits as its factorization.

1599945799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41334300, while the sum is 67.

The square root of 1599945799 is about 39999.3224817621. The cubic root of 1599945799 is about 1169.5938880789.

The spelling of 1599945799 in words is "one billion, five hundred ninety-nine million, nine hundred forty-five thousand, seven hundred ninety-nine".