13949634866 has 16 divisors (see below), whose sum is σ = 21093334944. Its totient is φ = 6918688224.

The previous prime is 13949634823. The next prime is 13949634889. The reversal of 13949634866 is 66843694931.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 129590 + ... + 211406.

It is an arithmetic number, because the mean of its divisors is an integer number (1318333434).

Almost surely, 2^13949634866 is an apocalyptic number.

13949634866 is a deficient number, since it is larger than the sum of its proper divisors (7143700078).

13949634866 is a wasteful number, since it uses less digits than its factorization.

13949634866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82505.

The product of its digits is 20155392, while the sum is 59.

The spelling of 13949634866 in words is "thirteen billion, nine hundred forty-nine million, six hundred thirty-four thousand, eight hundred sixty-six".