3338395661 has 4 divisors (see below), whose sum is σ = 3338670972. Its totient is φ = 3338120352.

The previous prime is 3338395657. The next prime is 3338395679. The reversal of 3338395661 is 1665938333.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1665938333 = 79 ⋅21087827.

It can be written as a sum of positive squares in 2 ways, for example, as 3093473161 + 244922500 = 55619^2 + 15650^2 .

It is a cyclic number.

It is not a de Polignac number, because 3338395661 - 2² = 3338395657 is a prime.

It is a super-3 number, since 3×3338395661³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3338395681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118586 + ... + 144011.

It is an arithmetic number, because the mean of its divisors is an integer number (834667743).

Almost surely, 2^3338395661 is an apocalyptic number.

It is an amenable number.

3338395661 is a deficient number, since it is larger than the sum of its proper divisors (275311).

3338395661 is a wasteful number, since it uses less digits than its factorization.

3338395661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275310.

The product of its digits is 1049760, while the sum is 47.

The square root of 3338395661 is about 57778.8513298767. The cubic root of 3338395661 is about 1494.5574109972.

The spelling of 3338395661 in words is "three billion, three hundred thirty-eight million, three hundred ninety-five thousand, six hundred sixty-one".