1606404463 has 2 divisors, whose sum is σ = 1606404464. Its totient is φ = 1606404462.

The previous prime is 1606404461. The next prime is 1606404491. The reversal of 1606404463 is 3644046061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1606404463 - 2¹ = 1606404461 is a prime.

Together with 1606404461, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1606404461) 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, 803202231 + 803202232.

It is an arithmetic number, because the mean of its divisors is an integer number (803202232).

Almost surely, 2^1606404463 is an apocalyptic number.

1606404463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606404463 is an equidigital number, since it uses as much as digits as its factorization.

1606404463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 1606404463 is about 40079.9758358211. The cubic root of 1606404463 is about 1171.1655813187.

The spelling of 1606404463 in words is "one billion, six hundred six million, four hundred four thousand, four hundred sixty-three".