728018413 has 2 divisors, whose sum is σ = 728018414. Its totient is φ = 728018412.

The previous prime is 728018399. The next prime is 728018443. The reversal of 728018413 is 314810827.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426752964 + 301265449 = 20658^2 + 17357^2 .

It is an emirp because it is prime and its reverse (314810827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728018413 - 2²⁹ = 191147501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728018443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364009206 + 364009207.

It is an arithmetic number, because the mean of its divisors is an integer number (364009207).

Almost surely, 2^728018413 is an apocalyptic number.

It is an amenable number.

728018413 is a deficient number, since it is larger than the sum of its proper divisors (1).

728018413 is an equidigital number, since it uses as much as digits as its factorization.

728018413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 728018413 is about 26981.8163398982. The cubic root of 728018413 is about 899.5958732948.

The spelling of 728018413 in words is "seven hundred twenty-eight million, eighteen thousand, four hundred thirteen".