4991502589 has 4 divisors (see below), whose sum is σ = 5012214460. Its totient is φ = 4970790720.

The previous prime is 4991502587. The next prime is 4991502623. The reversal of 4991502589 is 9852051994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9852051994 = 2 ⋅4926025997.

It can be written as a sum of positive squares in 2 ways, for example, as 3771188100 + 1220314489 = 61410^2 + 34933^2 .

It is a cyclic number.

It is not a de Polignac number, because 4991502589 - 2¹ = 4991502587 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 (4991502587) 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, 10355574 + ... + 10356055.

It is an arithmetic number, because the mean of its divisors is an integer number (1253053615).

Almost surely, 2^4991502589 is an apocalyptic number.

It is an amenable number.

4991502589 is a deficient number, since it is larger than the sum of its proper divisors (20711871).

4991502589 is a wasteful number, since it uses less digits than its factorization.

4991502589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20711870.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The square root of 4991502589 is about 70650.5667988587. The cubic root of 4991502589 is about 1709.0067061722.

The spelling of 4991502589 in words is "four billion, nine hundred ninety-one million, five hundred two thousand, five hundred eighty-nine".