729163213 has 2 divisors, whose sum is σ = 729163214. Its totient is φ = 729163212.

The previous prime is 729163189. The next prime is 729163219. The reversal of 729163213 is 312361927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675844009 + 53319204 = 25997^2 + 7302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729163213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729163219) 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, 364581606 + 364581607.

It is an arithmetic number, because the mean of its divisors is an integer number (364581607).

Almost surely, 2^729163213 is an apocalyptic number.

It is an amenable number.

729163213 is a deficient number, since it is larger than the sum of its proper divisors (1).

729163213 is an equidigital number, since it uses as much as digits as its factorization.

729163213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 729163213 is about 27003.0222938100. The cubic root of 729163213 is about 900.0671608317.

The spelling of 729163213 in words is "seven hundred twenty-nine million, one hundred sixty-three thousand, two hundred thirteen".