1799228729 has 2 divisors, whose sum is σ = 1799228730. Its totient is φ = 1799228728.

The previous prime is 1799228689. The next prime is 1799228741. The reversal of 1799228729 is 9278229971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1768370704 + 30858025 = 42052^2 + 5555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1799228729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1799228749) 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, 899614364 + 899614365.

It is an arithmetic number, because the mean of its divisors is an integer number (899614365).

Almost surely, 2^1799228729 is an apocalyptic number.

It is an amenable number.

1799228729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1799228729 is an equidigital number, since it uses as much as digits as its factorization.

1799228729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 56.

The square root of 1799228729 is about 42417.3163814025. The cubic root of 1799228729 is about 1216.2666325893.

The spelling of 1799228729 in words is "one billion, seven hundred ninety-nine million, two hundred twenty-eight thousand, seven hundred twenty-nine".