4591868209 has 4 divisors (see below), whose sum is σ = 4592068416. Its totient is φ = 4591668004.

The previous prime is 4591868201. The next prime is 4591868221. The reversal of 4591868209 is 9028681954.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4591868209 - 2³ = 4591868201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4591868201) 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, 60469 + ... + 113314.

It is an arithmetic number, because the mean of its divisors is an integer number (1148017104).

Almost surely, 2^4591868209 is an apocalyptic number.

It is an amenable number.

4591868209 is a deficient number, since it is larger than the sum of its proper divisors (200207).

4591868209 is a wasteful number, since it uses less digits than its factorization.

4591868209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200206.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 4591868209 is about 67763.3249553178. The cubic root of 4591868209 is about 1662.1229200682.

The spelling of 4591868209 in words is "four billion, five hundred ninety-one million, eight hundred sixty-eight thousand, two hundred nine".