1668335002 has 4 divisors (see below), whose sum is σ = 2502502506. Its totient is φ = 834167500.

The previous prime is 1668334999. The next prime is 1668335023. The reversal of 1668335002 is 2005338661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2005338661 = 29 ⋅69149609.

It can be written as a sum of positive squares in only one way, i.e., 1657385521 + 10949481 = 40711^2 + 3309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417083749 + ... + 417083752.

Almost surely, 2^1668335002 is an apocalyptic number.

1668335002 is a deficient number, since it is larger than the sum of its proper divisors (834167504).

1668335002 is an equidigital number, since it uses as much as digits as its factorization.

1668335002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834167503.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1668335002 is about 40845.2567870493. The cubic root of 1668335002 is about 1186.0265756211.

The spelling of 1668335002 in words is "one billion, six hundred sixty-eight million, three hundred thirty-five thousand, two".