730197161 has 2 divisors, whose sum is σ = 730197162. Its totient is φ = 730197160.

The previous prime is 730197103. The next prime is 730197187. The reversal of 730197161 is 161791037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643129600 + 87067561 = 25360^2 + 9331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730197161 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_37733822 and since 730197161 and 37733822 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (730197101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365098580 + 365098581.

It is an arithmetic number, because the mean of its divisors is an integer number (365098581).

Almost surely, 2^730197161 is an apocalyptic number.

It is an amenable number.

730197161 is a deficient number, since it is larger than the sum of its proper divisors (1).

730197161 is an equidigital number, since it uses as much as digits as its factorization.

730197161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 730197161 is about 27022.1605538861. The cubic root of 730197161 is about 900.4923894127.

The spelling of 730197161 in words is "seven hundred thirty million, one hundred ninety-seven thousand, one hundred sixty-one".