2668385489 has 16 divisors (see below), whose sum is σ = 3331069056. Its totient is φ = 2076604800.

The previous prime is 2668385471. The next prime is 2668385491. The reversal of 2668385489 is 9845838662.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2668385489 is a prime.

It is a super-2 number, since 2×2668385489² = 14240562235811538242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2668385459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39629 + ... + 83109.

It is an arithmetic number, because the mean of its divisors is an integer number (208191816).

Almost surely, 2^2668385489 is an apocalyptic number.

It is an amenable number.

2668385489 is a deficient number, since it is larger than the sum of its proper divisors (662683567).

2668385489 is a wasteful number, since it uses less digits than its factorization.

2668385489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44296.

The product of its digits is 19906560, while the sum is 59.

The square root of 2668385489 is about 51656.4176942227. The cubic root of 2668385489 is about 1387.0204259215.

The spelling of 2668385489 in words is "two billion, six hundred sixty-eight million, three hundred eighty-five thousand, four hundred eighty-nine".