304189720409 has 2 divisors, whose sum is σ = 304189720410. Its totient is φ = 304189720408.

The previous prime is 304189720397. The next prime is 304189720421. The reversal of 304189720409 is 904027981403.

It is a balanced prime because it is at equal distance from previous prime (304189720397) and next prime (304189720421).

It can be written as a sum of positive squares in only one way, i.e., 249165697225 + 55024023184 = 499165^2 + 234572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304189720409 is a prime.

It is a super-2 number, since 2×304189720409² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (304189720459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152094860204 + 152094860205.

It is an arithmetic number, because the mean of its divisors is an integer number (152094860205).

Almost surely, 2^304189720409 is an apocalyptic number.

It is an amenable number.

304189720409 is a deficient number, since it is larger than the sum of its proper divisors (1).

304189720409 is an equidigital number, since it uses as much as digits as its factorization.

304189720409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 304189720409 in words is "three hundred four billion, one hundred eighty-nine million, seven hundred twenty thousand, four hundred nine".