1690103 has 2 divisors, whose sum is σ = 1690104. Its totient is φ = 1690102.

The previous prime is 1690099. The next prime is 1690121. The reversal of 1690103 is 3010961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1690103 - 2² = 1690099 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1690153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845051 + 845052.

It is an arithmetic number, because the mean of its divisors is an integer number (845052).

2^1690103 is an apocalyptic number.

1690103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690103 is an equidigital number, since it uses as much as digits as its factorization.

1690103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1690103 is about 1300.0396147810. The cubic root of 1690103 is about 119.1162623375.

The spelling of 1690103 in words is "one million, six hundred ninety thousand, one hundred three".