2668638794 has 8 divisors (see below), whose sum is σ = 4070805120. Its totient is φ = 1311703756.

The previous prime is 2668638793. The next prime is 2668638799. The reversal of 2668638794 is 4978368662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is not an unprimeable number, because it can be changed into a prime (2668638793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11307674 + ... + 11307909.

It is an arithmetic number, because the mean of its divisors is an integer number (508850640).

Almost surely, 2^2668638794 is an apocalyptic number.

2668638794 is a deficient number, since it is larger than the sum of its proper divisors (1402166326).

2668638794 is a wasteful number, since it uses less digits than its factorization.

2668638794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22615644.

The product of its digits is 20901888, while the sum is 59.

The square root of 2668638794 is about 51658.8694611100. The cubic root of 2668638794 is about 1387.0643136449.

The spelling of 2668638794 in words is "two billion, six hundred sixty-eight million, six hundred thirty-eight thousand, seven hundred ninety-four".