1729893049 has 2 divisors, whose sum is σ = 1729893050. Its totient is φ = 1729893048.

The previous prime is 1729893017. The next prime is 1729893071. The reversal of 1729893049 is 9403989271.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 958831225 + 771061824 = 30965^2 + 27768^2 .

It is a cyclic number.

It is not a de Polignac number, because 1729893049 - 2⁵ = 1729893017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1729892987 and 1729893005.

It is not a weakly prime, because it can be changed into another prime (1729893349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864946524 + 864946525.

It is an arithmetic number, because the mean of its divisors is an integer number (864946525).

Almost surely, 2^1729893049 is an apocalyptic number.

It is an amenable number.

1729893049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1729893049 is an equidigital number, since it uses as much as digits as its factorization.

1729893049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 1729893049 is about 41591.9829895137. The cubic root of 1729893049 is about 1200.4380458641.

The spelling of 1729893049 in words is "one billion, seven hundred twenty-nine million, eight hundred ninety-three thousand, forty-nine".