4891766997 has 16 divisors (see below), whose sum is σ = 7062892928. Its totient is φ = 2993682240.

The previous prime is 4891766993. The next prime is 4891767007. The reversal of 4891766997 is 7996671984.

It is not a de Polignac number, because 4891766997 - 2² = 4891766993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891766993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339433 + ... + 353550.

It is an arithmetic number, because the mean of its divisors is an integer number (441430808).

Almost surely, 2^4891766997 is an apocalyptic number.

It is an amenable number.

4891766997 is a deficient number, since it is larger than the sum of its proper divisors (2171125931).

4891766997 is a wasteful number, since it uses less digits than its factorization.

4891766997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693180.

The product of its digits is 41150592, while the sum is 66.

The square root of 4891766997 is about 69941.1681129219. The cubic root of 4891766997 is about 1697.5474434927.

The spelling of 4891766997 in words is "four billion, eight hundred ninety-one million, seven hundred sixty-six thousand, nine hundred ninety-seven".