4991041917 has 12 divisors (see below), whose sum is σ = 7633358460. Its totient is φ = 3131634048.

The previous prime is 4991041873. The next prime is 4991041933. The reversal of 4991041917 is 7191401994.

It can be written as a sum of positive squares in 2 ways, for example, as 2577186756 + 2413855161 = 50766^2 + 49131^2 .

It is not a de Polignac number, because 4991041917 - 2¹⁹ = 4990517629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991041997) 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, 16310442 + ... + 16310747.

It is an arithmetic number, because the mean of its divisors is an integer number (636113205).

Almost surely, 2^4991041917 is an apocalyptic number.

It is an amenable number.

4991041917 is a deficient number, since it is larger than the sum of its proper divisors (2642316543).

4991041917 is a wasteful number, since it uses less digits than its factorization.

4991041917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32621212 (or 32621209 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 4991041917 is about 70647.3065091657. The cubic root of 4991041917 is about 1708.9541291012.

The spelling of 4991041917 in words is "four billion, nine hundred ninety-one million, forty-one thousand, nine hundred seventeen".