4989170191 has 4 divisors (see below), whose sum is σ = 5009872384. Its totient is φ = 4968468000.

The previous prime is 4989170177. The next prime is 4989170267. The reversal of 4989170191 is 1910719894.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4989170191 - 2²⁵ = 4955615759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989170491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10350735 + ... + 10351216.

It is an arithmetic number, because the mean of its divisors is an integer number (1252468096).

Almost surely, 2^4989170191 is an apocalyptic number.

4989170191 is a deficient number, since it is larger than the sum of its proper divisors (20702193).

4989170191 is a wasteful number, since it uses less digits than its factorization.

4989170191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20702192.

The product of its (nonzero) digits is 163296, while the sum is 49.

The square root of 4989170191 is about 70634.0582934324. The cubic root of 4989170191 is about 1708.7404733911.

The spelling of 4989170191 in words is "four billion, nine hundred eighty-nine million, one hundred seventy thousand, one hundred ninety-one".