1690738103 has 2 divisors, whose sum is σ = 1690738104. Its totient is φ = 1690738102.

The previous prime is 1690738087. The next prime is 1690738117. The reversal of 1690738103 is 3018370961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1690738103 - 2⁴ = 1690738087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1690738183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845369051 + 845369052.

It is an arithmetic number, because the mean of its divisors is an integer number (845369052).

Almost surely, 2^1690738103 is an apocalyptic number.

1690738103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690738103 is an equidigital number, since it uses as much as digits as its factorization.

1690738103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1690738103 is about 41118.5858584655. The cubic root of 1690738103 is about 1191.3118088025.

The spelling of 1690738103 in words is "one billion, six hundred ninety million, seven hundred thirty-eight thousand, one hundred three".