1599999199 has 2 divisors, whose sum is σ = 1599999200. Its totient is φ = 1599999198.

The previous prime is 1599999157. The next prime is 1599999221. The reversal of 1599999199 is 9919999951.

It is a strong prime.

It is an emirp because it is prime and its reverse (9919999951) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1599999199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1599997199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 799999599 + 799999600.

It is an arithmetic number, because the mean of its divisors is an integer number (799999600).

Almost surely, 2^1599999199 is an apocalyptic number.

1599999199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1599999199 is an equidigital number, since it uses as much as digits as its factorization.

1599999199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23914845, while the sum is 70.

The square root of 1599999199 is about 39999.9899874987. The cubic root of 1599999199 is about 1169.6069001069.

The spelling of 1599999199 in words is "one billion, five hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred ninety-nine".