4891564793 has 4 divisors (see below), whose sum is σ = 4919839908. Its totient is φ = 4863289680.

The previous prime is 4891564757. The next prime is 4891564829. The reversal of 4891564793 is 3974651984.

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

It is an interprime number because it is at equal distance from previous prime (4891564757) and next prime (4891564829).

It can be written as a sum of positive squares in 2 ways, for example, as 2640726544 + 2250838249 = 51388^2 + 47443^2 .

It is a cyclic number.

It is not a de Polignac number, because 4891564793 - 2⁶ = 4891564729 is a prime.

It is a super-2 number, since 2×4891564793² = 47854812248234265698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4891564703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14137298 + ... + 14137643.

It is an arithmetic number, because the mean of its divisors is an integer number (1229959977).

Almost surely, 2^4891564793 is an apocalyptic number.

It is an amenable number.

4891564793 is a deficient number, since it is larger than the sum of its proper divisors (28275115).

4891564793 is a wasteful number, since it uses less digits than its factorization.

4891564793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28275114.

The product of its digits is 6531840, while the sum is 56.

The square root of 4891564793 is about 69939.7225687949. The cubic root of 4891564793 is about 1697.5240534707.

The spelling of 4891564793 in words is "four billion, eight hundred ninety-one million, five hundred sixty-four thousand, seven hundred ninety-three".