1689003893 has 2 divisors, whose sum is σ = 1689003894. Its totient is φ = 1689003892.

The previous prime is 1689003851. The next prime is 1689003931. The reversal of 1689003893 is 3983009861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1666517329 + 22486564 = 40823^2 + 4742^2 .

It is a cyclic number.

It is not a de Polignac number, because 1689003893 - 2¹⁰ = 1689002869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1689023893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844501946 + 844501947.

It is an arithmetic number, because the mean of its divisors is an integer number (844501947).

Almost surely, 2^1689003893 is an apocalyptic number.

It is an amenable number.

1689003893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1689003893 is an equidigital number, since it uses as much as digits as its factorization.

1689003893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 1689003893 is about 41097.4925390832. The cubic root of 1689003893 is about 1190.9043552729.

The spelling of 1689003893 in words is "one billion, six hundred eighty-nine million, three thousand, eight hundred ninety-three".