2668309494 has 32 divisors (see below), whose sum is σ = 5653761120. Its totient is φ = 836639232.

The previous prime is 2668309493. The next prime is 2668309507. The reversal of 2668309494 is 4949038662.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668309493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200512 + ... + 213404.

It is an arithmetic number, because the mean of its divisors is an integer number (176680035).

Almost surely, 2^2668309494 is an apocalyptic number.

2668309494 is an abundant number, since it is smaller than the sum of its proper divisors (2985451626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2668309494 is a wasteful number, since it uses less digits than its factorization.

2668309494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14944.

The product of its (nonzero) digits is 2239488, while the sum is 51.

The square root of 2668309494 is about 51655.6821075862. The cubic root of 2668309494 is about 1387.0072584565.

The spelling of 2668309494 in words is "two billion, six hundred sixty-eight million, three hundred nine thousand, four hundred ninety-four".