730321849 has 2 divisors, whose sum is σ = 730321850. Its totient is φ = 730321848.

The previous prime is 730321831. The next prime is 730321859. The reversal of 730321849 is 948123037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 711555625 + 18766224 = 26675^2 + 4332^2 .

It is an emirp because it is prime and its reverse (948123037) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 730321849 - 2⁵ = 730321817 is a prime.

It is not a weakly prime, because it can be changed into another prime (730321859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365160924 + 365160925.

It is an arithmetic number, because the mean of its divisors is an integer number (365160925).

Almost surely, 2^730321849 is an apocalyptic number.

It is an amenable number.

730321849 is a deficient number, since it is larger than the sum of its proper divisors (1).

730321849 is an equidigital number, since it uses as much as digits as its factorization.

730321849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 730321849 is about 27024.4675988261. The cubic root of 730321849 is about 900.5436423302.

The spelling of 730321849 in words is "seven hundred thirty million, three hundred twenty-one thousand, eight hundred forty-nine".