368728609 has 2 divisors, whose sum is σ = 368728610. Its totient is φ = 368728608.

The previous prime is 368728603. The next prime is 368728627. The reversal of 368728609 is 906827863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240405025 + 128323584 = 15505^2 + 11328^2 .

It is a cyclic number.

It is not a de Polignac number, because 368728609 - 2⁹ = 368728097 is a prime.

It is not a weakly prime, because it can be changed into another prime (368728603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184364304 + 184364305.

It is an arithmetic number, because the mean of its divisors is an integer number (184364305).

Almost surely, 2^368728609 is an apocalyptic number.

It is an amenable number.

368728609 is a deficient number, since it is larger than the sum of its proper divisors (1).

368728609 is an equidigital number, since it uses as much as digits as its factorization.

368728609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 368728609 is about 19202.3073873949. The cubic root of 368728609 is about 717.0822046143.

The spelling of 368728609 in words is "three hundred sixty-eight million, seven hundred twenty-eight thousand, six hundred nine".