1603828279409 has 2 divisors, whose sum is σ = 1603828279410. Its totient is φ = 1603828279408.

The previous prime is 1603828279399. The next prime is 1603828279477. The reversal of 1603828279409 is 9049728283061.

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., 1573699998784 + 30128280625 = 1254472^2 + 173575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1603828279409 - 2¹⁶ = 1603828213873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1603828270409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801914139704 + 801914139705.

It is an arithmetic number, because the mean of its divisors is an integer number (801914139705).

Almost surely, 2^{1603828279409} is an apocalyptic number.

It is an amenable number.

1603828279409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603828279409 is an equidigital number, since it uses as much as digits as its factorization.

1603828279409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 1603828279409 in words is "one trillion, six hundred three billion, eight hundred twenty-eight million, two hundred seventy-nine thousand, four hundred nine".