4991626168 has 8 divisors (see below), whose sum is σ = 9359299080. Its totient is φ = 2495813080.

The previous prime is 4991626163. The next prime is 4991626181. The reversal of 4991626168 is 8616261994.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991626163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311976628 + ... + 311976643.

It is an arithmetic number, because the mean of its divisors is an integer number (1169912385).

Almost surely, 2^4991626168 is an apocalyptic number.

It is an amenable number.

4991626168 is a deficient number, since it is larger than the sum of its proper divisors (4367672912).

4991626168 is a wasteful number, since it uses less digits than its factorization.

4991626168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623953277 (or 623953273 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 52.

The square root of 4991626168 is about 70651.4413724165. The cubic root of 4991626168 is about 1709.0208098476.

The spelling of 4991626168 in words is "four billion, nine hundred ninety-one million, six hundred twenty-six thousand, one hundred sixty-eight".