729385157 has 2 divisors, whose sum is σ = 729385158. Its totient is φ = 729385156.

The previous prime is 729385147. The next prime is 729385169. The reversal of 729385157 is 751583927.

729385157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 553849156 + 175536001 = 23534^2 + 13249^2 .

It is a cyclic number.

It is not a de Polignac number, because 729385157 - 2⁴ = 729385141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729385147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364692578 + 364692579.

It is an arithmetic number, because the mean of its divisors is an integer number (364692579).

Almost surely, 2^729385157 is an apocalyptic number.

It is an amenable number.

729385157 is a deficient number, since it is larger than the sum of its proper divisors (1).

729385157 is an equidigital number, since it uses as much as digits as its factorization.

729385157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529200, while the sum is 47.

The square root of 729385157 is about 27007.1315951917. The cubic root of 729385157 is about 900.1584729173.

The spelling of 729385157 in words is "seven hundred twenty-nine million, three hundred eighty-five thousand, one hundred fifty-seven".