4991823117 has 12 divisors (see below), whose sum is σ = 7211116380. Its totient is φ = 3327556608.

The previous prime is 4991823113. The next prime is 4991823131. The reversal of 4991823117 is 7113281994.

It can be written as a sum of positive squares in 2 ways, for example, as 3479702121 + 1512120996 = 58989^2 + 38886^2 .

It is not a de Polignac number, because 4991823117 - 2² = 4991823113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991823113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102733 + ... + 143309.

It is an arithmetic number, because the mean of its divisors is an integer number (600926365).

Almost surely, 2^4991823117 is an apocalyptic number.

It is an amenable number.

4991823117 is a deficient number, since it is larger than the sum of its proper divisors (2219293263).

4991823117 is a wasteful number, since it uses less digits than its factorization.

4991823117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54252 (or 54249 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 4991823117 is about 70652.8351660427. The cubic root of 4991823117 is about 1709.0432865250.

The spelling of 4991823117 in words is "four billion, nine hundred ninety-one million, eight hundred twenty-three thousand, one hundred seventeen".