1669334993 has 2 divisors, whose sum is σ = 1669334994. Its totient is φ = 1669334992.

The previous prime is 1669334981. The next prime is 1669335007. The reversal of 1669334993 is 3994339661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1383319249 + 286015744 = 37193^2 + 16912^2 .

It is a cyclic number.

It is not a de Polignac number, because 1669334993 - 2²² = 1665140689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1669334923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834667496 + 834667497.

It is an arithmetic number, because the mean of its divisors is an integer number (834667497).

Almost surely, 2^1669334993 is an apocalyptic number.

It is an amenable number.

1669334993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669334993 is an equidigital number, since it uses as much as digits as its factorization.

1669334993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2834352, while the sum is 53.

The square root of 1669334993 is about 40857.4961665543. The cubic root of 1669334993 is about 1186.2634942686.

The spelling of 1669334993 in words is "one billion, six hundred sixty-nine million, three hundred thirty-four thousand, nine hundred ninety-three".