1605103 has 2 divisors, whose sum is σ = 1605104. Its totient is φ = 1605102.

The previous prime is 1605083. The next prime is 1605127. The reversal of 1605103 is 3015061.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1605103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1605173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802551 + 802552.

It is an arithmetic number, because the mean of its divisors is an integer number (802552).

2^1605103 is an apocalyptic number.

1605103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1605103 is an equidigital number, since it uses as much as digits as its factorization.

1605103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1605103 is about 1266.9265961373. The cubic root of 1605103 is about 117.0849214235.

The spelling of 1605103 in words is "one million, six hundred five thousand, one hundred three".