4991085189 has 32 divisors (see below), whose sum is σ = 7441822080. Its totient is φ = 3306038400.

The previous prime is 4991085181. The next prime is 4991085217. The reversal of 4991085189 is 9815801994.

It is not a de Polignac number, because 4991085189 - 2³ = 4991085181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991085181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3496894 + ... + 3498320.

It is an arithmetic number, because the mean of its divisors is an integer number (232556940).

Almost surely, 2^4991085189 is an apocalyptic number.

It is an amenable number.

4991085189 is a deficient number, since it is larger than the sum of its proper divisors (2450736891).

4991085189 is a wasteful number, since it uses less digits than its factorization.

4991085189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The square root of 4991085189 is about 70647.6127622158. The cubic root of 4991085189 is about 1708.9590679263.

The spelling of 4991085189 in words is "four billion, nine hundred ninety-one million, eighty-five thousand, one hundred eighty-nine".