4949817666 has 16 divisors (see below), whose sum is σ = 9949889664. Its totient is φ = 1641563504.

The previous prime is 4949817659. The next prime is 4949817689. The reversal of 4949817666 is 6667189494.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2092650 + ... + 2095013.

It is an arithmetic number, because the mean of its divisors is an integer number (621868104).

Almost surely, 2^4949817666 is an apocalyptic number.

4949817666 is an abundant number, since it is smaller than the sum of its proper divisors (5000071998).

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

4949817666 is a wasteful number, since it uses less digits than its factorization.

4949817666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187865.

The product of its digits is 15676416, while the sum is 60.

The square root of 4949817666 is about 70354.9405941047. The cubic root of 4949817666 is about 1704.2359950812.

The spelling of 4949817666 in words is "four billion, nine hundred forty-nine million, eight hundred seventeen thousand, six hundred sixty-six".