1683239689 has 2 divisors, whose sum is σ = 1683239690. Its totient is φ = 1683239688.

The previous prime is 1683239669. The next prime is 1683239743. The reversal of 1683239689 is 9869323861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1588819600 + 94420089 = 39860^2 + 9717^2 .

It is an emirp because it is prime and its reverse (9869323861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1683239689 - 2¹³ = 1683231497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1683239669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841619844 + 841619845.

It is an arithmetic number, because the mean of its divisors is an integer number (841619845).

Almost surely, 2^1683239689 is an apocalyptic number.

It is an amenable number.

1683239689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1683239689 is an equidigital number, since it uses as much as digits as its factorization.

1683239689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 55.

The square root of 1683239689 is about 41027.3041887960. The cubic root of 1683239689 is about 1189.5480450704.

The spelling of 1683239689 in words is "one billion, six hundred eighty-three million, two hundred thirty-nine thousand, six hundred eighty-nine".