1603420354609 has 2 divisors, whose sum is σ = 1603420354610. Its totient is φ = 1603420354608.

The previous prime is 1603420354573. The next prime is 1603420354619. The reversal of 1603420354609 is 9064530243061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 833057798400 + 770362556209 = 912720^2 + 877703^2 .

It is a cyclic number.

It is not a de Polignac number, because 1603420354609 - 2¹⁹ = 1603419830321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1603420354619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801710177304 + 801710177305.

It is an arithmetic number, because the mean of its divisors is an integer number (801710177305).

Almost surely, 2^{1603420354609} is an apocalyptic number.

It is an amenable number.

1603420354609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603420354609 is an equidigital number, since it uses as much as digits as its factorization.

1603420354609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 1603420354609 in words is "one trillion, six hundred three billion, four hundred twenty million, three hundred fifty-four thousand, six hundred nine".