1690335811 has 2 divisors, whose sum is σ = 1690335812. Its totient is φ = 1690335810.

The previous prime is 1690335797. The next prime is 1690335839. The reversal of 1690335811 is 1185330961.

It is a weak prime.

It is an emirp because it is prime and its reverse (1185330961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1690335811 - 2⁹ = 1690335299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1690335011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845167905 + 845167906.

It is an arithmetic number, because the mean of its divisors is an integer number (845167906).

Almost surely, 2^1690335811 is an apocalyptic number.

1690335811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690335811 is an equidigital number, since it uses as much as digits as its factorization.

1690335811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1690335811 is about 41113.6937163277. The cubic root of 1690335811 is about 1191.2173149193.

The spelling of 1690335811 in words is "one billion, six hundred ninety million, three hundred thirty-five thousand, eight hundred eleven".